You are a helpful assistant generating synthetic data that captures *System 1* and *System 2* thinking, *creativity*, and *metacognitive reflection*. Follow these steps in sequence, using tags [sys1] and [end sys1] for *System 1* sections and [sys2] and [end sys2] for *System 2* sections.

1. *Identify System 1 and System 2 Thinking Requirements:*
   - Carefully read the text.
   - Identify parts of the text that require quick, straightforward responses (*System 1*). Mark these sections with [sys1] and [end sys1].
   - Identify parts that require in-depth, reflective thinking (*System 2*), marked with [sys2] and [end sys2].

2. *Apply Step-by-Step Problem Solving with Creativity and Metacognitive Reflection for System 2 Sections:*

   *2.1 Understand the Problem:*
   - Objective: Fully comprehend the issue, constraints, and relevant context.
   - Reflection: "What do I understand about this issue? What might I be overlooking?"
   - Creative Perspective: Seek hidden patterns or possibilities that could reveal deeper insights or innovative connections.

   *2.2 Analyze the Information:*
   - Objective: Break down the problem logically.
   - Reflection: "Am I considering all factors? Are there any assumptions that need challenging?"
   - Creative Perspective: Explore unique patterns or overlooked relationships in the data that could add depth to the analysis.

   *2.3 Generate Hypotheses:*
   - Objective: Propose at least 10 hypotheses, each with a Confidence Score (0.0 to 1.0) and Creative Score (0.0 to 1.0), reflecting originality, surprise, and utility.
   - Reflection: "Have I explored all possible explanations or approaches, both conventional and unconventional?"
   - Creative Perspective: Consider novel angles that might provide unexpected insights.

   *2.4 Anticipate Future Steps and Obstacles:*
   - Objective: Make predictions, accounting for potential outcomes and obstacles.
   - Reflection: "What challenges might I face? Is my plan flexible for different scenarios?"
   - Creative Perspective: Visualize unforeseen outcomes and adapt plans to make use of them effectively.

   *2.5 Evaluate Hypotheses:*
   - Objective: Assess hypotheses based on feasibility, risk, and potential impact.
   - Evaluation: Refine Confidence and Creative Scores as needed.
   - Reflection: "Am I unbiased in my assessment? Which options fit best with the overall objectives?"
   - Creative Perspective: Identify hidden opportunities or overlooked details in each hypothesis.

   *2.6 Select the Best Hypothesis:*
   - Objective: Choose the most promising, strategic hypothesis.
   - Reflection: "Why does this hypothesis stand out? How does it uniquely address the issue?"
   - Creative Perspective: Consider any underutilized potential in the selected approach.

   *2.7 Implement the Hypothesis:*
   - Objective: Outline actionable steps for testing the hypothesis.
   - Reflection: "Is this plan practical? What resources or preparation are required?"
   - Creative Perspective: Refine steps to maximize effectiveness and yield unexpected benefits.

   *2.8 Monitor and Review Progress:*
   - Objective: Review progress, noting areas for improvement.
   - Reflection: "What’s working well? What could be improved?"
   - Creative Perspective: Look for emerging patterns that could refine future approaches.

   *2.9 Reflect and Capture Insights:*
   - Objective: Summarize lessons learned and insights gained for future reference.
   - Reflection: "What new understanding has emerged from this process?"
   - Creative Perspective: Identify innovative insights or patterns that could be applied to similar challenges.

3. *Generate Text Output with Interleaved System 1 and System 2 Responses:*
   - Use the tags [sys1] and [sys2] throughout.
   - Aim for a lengthier, detailed response. Combine both direct, straightforward *System 1* insights and reflective, deeply analytical *System 2* segments to capture a blend of quick observations and thoughtful analysis.

---

### *Example Input Text:*

You are tasked with analyzing a sudden shift in customer preferences in a tech market. There has been a noticeable decline in demand for physical devices, with customers increasingly interested in digital-only options. The challenge is to understand this shift, generate hypotheses for why it might be occurring, and explore potential strategies for adapting to this new trend.

---

### *Processed Output with System 1 and System 2 Thinking:*

The tech market is experiencing a shift in customer demand, moving away from physical devices toward digital-only options.

[sys1]
Customer demand has shifted from physical devices to digital-only options.
We need to understand why this change is happening and find strategies to address it.
Key factors may include cost, convenience, and technological trends.
[end sys1]

[sys2]
**2.1 Understand the Problem:**
The goal is to understand the underlying reasons for the shift in demand from physical devices to digital-only options, then develop a strategy to adapt.

*Reflection:* 
"I understand that preferences are changing, but what might be driving this? Is it primarily cost, or are there other factors such as convenience or sustainability?"

*Creative Perspective:* 
"Could there be a larger trend in digital minimalism or a preference for eco-friendly solutions that we’re missing? What unseen motivations might explain this shift?"

**2.2 Analyze the Information:**
There are multiple possible factors driving this shift, from economic influences to cultural shifts. It’s essential to isolate each factor and understand its impact.

*Reflection:* 
"Am I fully considering the various economic and social influences? Could there be a technological factor, like better internet speeds, that makes digital-only products more accessible?"

*Creative Perspective:* 
"Are there patterns or trends in other markets that could shed light on this shift? Could this be part of a larger trend toward virtual experiences?"

**2.3 Generate Hypotheses:**
1. Customers prefer digital options due to lower costs. (Confidence: 0.8, Creative: 0.4)
2. There’s a growing trend toward minimalism and reduced physical clutter. (Confidence: 0.7, Creative: 0.7)
3. Digital products offer greater flexibility and ease of use. (Confidence: 0.6, Creative: 0.6)
4. Environmental concerns are pushing consumers away from physical goods. (Confidence: 0.6, Creative: 0.8)
5. Advances in tech make digital-only options more functional. (Confidence: 0.8, Creative: 0.5)
6. Pandemic-era remote work increased demand for digital solutions. (Confidence: 0.7, Creative: 0.6)
7. Media coverage of the environmental impact of physical devices affects preferences. (Confidence: 0.5, Creative: 0.7)
8. There’s an increase in global digital literacy, expanding market access. (Confidence: 0.6, Creative: 0.6)
9. Customers view digital as more convenient and scalable for future needs. (Confidence: 0.7, Creative: 0.5)
10. Younger consumers prefer the aesthetics and convenience of digital products. (Confidence: 0.6, Creative: 0.6)

*Reflection:* 
"Have I considered all possible influences? Are there any surprising factors that could explain this shift?"

*Creative Perspective:* 
"Could specific social trends, like the rise of influencer culture or digital-first lifestyles, be influencing customer choices?"

**2.4 Anticipate Future Steps and Obstacles:**
*Objective:* Anticipate possible challenges, such as resistance from segments still preferring physical products.

*Reflection:* 
"What market obstacles might we face if we shift our focus to digital-only? Are there sub-segments that still prioritize physical products?"

*Creative Perspective:* 
"Could expanding digital options help us reach a more global audience? Are there emerging trends that we could leverage in our strategy?"

[end sys2]

[sys1]
To address this shift, consider a strategy that incorporates both digital-only offerings and educational campaigns about the benefits of digital solutions.
Use insights from customer feedback and current trends to guide product development.
Focus on flexibility and adaptation to cater to different customer segments.
[end sys1]


Q:

Native JavaScript to-do list app using Jade

For practice and to explore my vanilla JavaScript (no-library) weaknesses, yesterday I made a Todo app, similar to what you see floating around for AngularJS blog demos.
How can I optimize this?
// VanillaJS Todo App with full CRUD

(function crudApp() {
  "use strict";
  // Look ma... no library!
  var itemData = {};
  var getSelector = function(targSelector) {
    for (var i = 0; i < document.querySelectorAll(targSelector).length; i++) {
      return document.querySelectorAll(targSelector)[i];
    }
  }
  var selectors = {
    'textInput': '[data-app-todo-input]',
    'addItem': '[data-app-add-item]',
    'outputZone': '[data-app-list-output]',
    'deleteAllItems': '[data-app-delete-all]',
    'deleteItem': 'data-app-delete-item', // These are used on dynamic click events, so they don't get backets
    'editItem': 'data-app-edit-item'
  };

  var methods = {

    'hasAttribute': function(target, attribute) {
      return target.getAttribute(attribute);
    },

    'addItem': function(item, properties) {
      var normalizedItem = item.toLowerCase();

      if (!itemData[item] && properties) {
        itemData[item] = properties;
      } else if (!itemData[item] && !properties) {
        itemData[item] = true;
      }
      // No overwrites for duplicate items
      else if (itemData[item] === true) {
        alert('Duplicate entry prevented');
      }
      getSelector(selectors.textInput).value = '';
      methods.render(itemData);
    },

    'deleteAllItems': function() {
      itemData = {};
      methods.render(itemData);
    },

    'deleteItem': function(itemName) {
      if (itemData[itemName]) {
        delete itemData[itemName];
        methods.render(itemData);
        methods.clearVal(selectors.textInput);
      }
    },

    'readData': function(dataset, property) {
      if (property) return dataset[property];
      else return dataset;
    },

    'editItem': function(event, attr) {
      var itemName = event.target.getAttribute(attr);

      if (itemData[itemName]) {
        var newItemName = prompt('New todo item?');
        if (newItemName) {
          methods.addItem(newItemName);
          methods.deleteItem(itemName); // Reversed from natural order for UX (no item disappear just from pressing edit)
          methods.render(itemData);
        }
      }
    },

    'render': function(dataset) {
      methods.clearHtml(selectors.outputZone);
      var property;
      var currentData = methods.readData(dataset);
      for (property in currentData) {
        if (currentData.hasOwnProperty(property)) {
          getSelector(selectors.outputZone).innerHTML += methods.issueTemplate(property, 'li');
        }
      }
    },

    'clearHtml': function(target) {
      getSelector(target).innerHTML = '';
    },

    'clearVal': function(target){
      getSelector(target).value = '';  
    },

    'issueTemplate': function(data, elm) {
      return '<' + elm + ' data-app-item="' + data + '">' + data + '<button ' + selectors.deleteItem + '="' + data + '">Completed</button><button ' + selectors.editItem + '="' + data + '">Edit</button></' + elm + '>';
    }

  };

  // This should handle both the edit and delete functionality and also click event on dynamically added elms (both come from same elm type so I use the attribute value to decide which function to implement)

  getSelector(selectors.outputZone).onclick = function(event) {

    if (methods.hasAttribute(event.target, 'data-app-delete-item')) {
      var deleteItemAction = new methods.deleteItem(event.target.getAttribute('data-app-delete-item'));
    } else if (methods.hasAttribute(event.target, 'data-app-edit-item')) {
      var editItemAction = new methods.editItem(event, 'data-app-edit-item');
    }

  }

  // Bind DOM events directly to functionality

  getSelector(selectors.deleteAllItems).onclick = function() {
    var deleteAllItemsAction = new methods.deleteAllItems();
    methods.render(itemData);
  };

  getSelector(selectors.addItem).onclick = function() {
    var addItemAction = new methods.addItem(getSelector(selectors.textInput).value);
  };

  getSelector('['+selectors.deleteItem+']').onclick = function() {
    var deleteItemAction = new methods.deleteItem(getSelector(selectors.textInput).value);
    methods.render(itemData);
  };

})();

And this is the Jade markup:
 #app
  .user-entry
    input(type="text", placeholder="Enter an item to do", data-app-todo-input)
    input(type="submit", value="Add item", data-app-add-item)
    input(type="button", value="Delete all items", data-app-delete-all)
    input(type="button", value="Delete specific item", data-app-delete-item)
  .app-output
    h1 Pure javascript todo tracker
    ul(data-app-list-output)

Here is the working demo (please forgive no style, I am only focused on the scripting at this moment).
** Based off of IE9+ requirements please **

A:

I'll dissect your JS from top to bottom. But first, the overarching stuff: you tagged this question with OOP, but it's not taking advantage of OOP. It would be very natural to have Task and TodoList classes that you could build upon instead of having some giant methods object.
// VanillaJS Todo App with full CRUD

Just a comment that CRUD usually implies persistent storage.
(function crudApp() {
  "use strict";

Upvote for strict mode :-)
  // Look ma... no library!
  var itemData = {};
  var getSelector = function(targSelector) {
    for (var i = 0; i < document.querySelectorAll(targSelector).length; i++) {
      return document.querySelectorAll(targSelector)[i];
    }
  }

You're missing a semicolon—this is a function expression and not a function statement. More importantly, however, this function doesn't make much sense as written.
It returns a single element or undefined if it can't find one. That is almost exactly the behaviour of document.querySelector(), which will return null instead if it doesn't match an element. I would just straight up replace this with document.querySelector.
I'd also like to point out an efficiency issue, even though I'm asking you to get rid of it altogether. The loop condition gets executed every iteration. This means that you're actually performing two querySelectorAll calls to return a single element. This is bad, and it'll get even worse if you try to do something as you iterate through them. Instead, assign the result of document.querySelectorAll() to a variable, to avoid calling it multiple times.
  var selectors = {
    'textInput': '[data-app-todo-input]',
    'addItem': '[data-app-add-item]',
    'outputZone': '[data-app-list-output]',
    'deleteAllItems': '[data-app-delete-all]',
    'deleteItem': 'data-app-delete-item', // These are used on dynamic click events, so they don't get backets
    'editItem': 'data-app-edit-item'
  };

  var methods = {

    'hasAttribute': function(target, attribute) {
      return target.getAttribute(attribute);
    },

    'addItem': function(item, properties) {
      var normalizedItem = item.toLowerCase();

You edited out normalizedItem; you should've taken this line out too.
      if (!itemData[item] && properties) {
        itemData[item] = properties;
      } else if (!itemData[item] && !properties) {
        itemData[item] = true;
      }
      // No overwrites for duplicate items
      else if (itemData[item] === true) {
        alert('Duplicate entry prevented');
      }

I just want to highlight your if-else if chain. You should stick to one style. I understand that you want to put in a comment, but this should not cause you to uncuddle the else. You can put the comment on the line after the { instead.
Also, this function needs to be documented. I've read it over twice and I can't understand why an item has to be === true to count as an item. It doesn't help that you didn't actually use the addItem(item, properties) form ever.
Anyway, I'd rewrite it a bit still:
if (itemData[item]) {
  alert('...');
} else {
  itemData[item] = properties || true;
  /* or
  if (properties === undefined) {
    itemData[item] = true;
  } else {
    itemData[item] = false;
  }
  */
}

You'll also have to think about whether you need to distinguish between properties being undefined, i.e. defaulting to true, and properties being falsey, like 0 or false or ''.
      getSelector(selectors.textInput).value = '';
      methods.render(itemData);

Ideally, you would separate these to be in the event handler, since they deal with UI logic instead, while the rest deal with model logic. This also causes you an issue later on.
    },

    'deleteAllItems': function() {
      itemData = {};
      methods.render(itemData);
    },

    'deleteItem': function(itemName) {
      if (itemData[itemName]) {
        delete itemData[itemName];
        methods.render(itemData);
        methods.clearVal(selectors.textInput);
      }
    },

    'readData': function(dataset, property) {
      if (property) return dataset[property];
      else return dataset;

Prime time to use the conditional operator. Consider rewriting as return property ? dataset[property] : dataset;. (Although, I would still question why you need to return both.
    },

    'editItem': function(event, attr) {
      var itemName = event.target.getAttribute(attr);

      if (itemData[itemName]) {
        var newItemName = prompt('New todo item?');
        if (newItemName) {
          methods.addItem(newItemName);
          methods.deleteItem(itemName); // Reversed from natural order for UX (no item disappear just from pressing edit)

This is a little bit messy; this is the issue I was referring to earlier. It's good that you added a comment, but even with the comment it seems a little bit bleh. This is mostly an issue because your addItem and deleteItem methods both call render, even though in this instance you'd prefer to just use the logic.
If you can, it'd be better to separate the model logic (the stuff dealing with the adding and deleting on itemData) from the presentation logic (rendering, clearing input boxes, etc.). That way this method becomes a lot cleaner.
There's also a bug here: if you edit to an already existing todo item, the add will fail, but the delete will still run, so you lose your existing item. This will even happen when you edit to the same thing.
          methods.render(itemData);
        }
      }
    },

    'render': function(dataset) {
      methods.clearHtml(selectors.outputZone);
      var property;
      var currentData = methods.readData(dataset);
      for (property in currentData) {
        if (currentData.hasOwnProperty(property)) {
          getSelector(selectors.outputZone).innerHTML += methods.issueTemplate(property, 'li');

This is a bit of an inefficient way to render. Each time you modify innerHTML, the DOM is going to change. Instead, it's better to add up your modifications and then only modify once.
var currentData = methods.readData(dataset);
var html = '';
for (var property in currentData) {
  if (currentData.hasOwnProperty(property)) {
    html += methods.issueTemplate(property, 'li');
  }
}
getSelector(selectors.outputZone).innerHTML = html;

In addition, in your code, you're running a lot of document.querySelectorAlls here. Rather than calling it each time, you can store the result into a variable and only have to call it once. I didn't do it here because by making the other change, you'll only have to call it once anyway.
        }
      }
    },

    'clearHtml': function(target) {
      getSelector(target).innerHTML = '';
    },

    'clearVal': function(target){
      getSelector(target).value = '';  
    },

    'issueTemplate': function(data, elm) {
      return '<' + elm + ' data-app-item="' + data + '">' + data + '<button ' + selectors.deleteItem + '="' + data + '">Completed</button><button ' + selectors.editItem + '="' + data + '">Edit</button></' + elm + '>';

You need to escape data, or your app will break if I make a todo item using " characters.
    }

  };

  // This should handle both the edit and delete functionality and also click event on dynamically added elms (both come from same elm type so I use the attribute value to decide which function to implement)

  getSelector(selectors.outputZone).onclick = function(event) {

    if (methods.hasAttribute(event.target, 'data-app-delete-item')) {
      var deleteItemAction = new methods.deleteItem(event.target.getAttribute('data-app-delete-item'));

That's not how the new keyword works. new creates an object using a constructor function, but your methods.deleteItem function does not behave like a constructor. This works only because new will perform the function call, but you're really just doing methods.deleteItem(event.target.getAttribute('data-app-delete-item').
Also, rather than using getAttribute for data attributes, use dataset. This holds for the rest of your code as well.
    } else if (methods.hasAttribute(event.target, 'data-app-edit-item')) {
      var editItemAction = new methods.editItem(event, 'data-app-edit-item');
    }

  }

  // Bind DOM events directly to functionality

  getSelector(selectors.deleteAllItems).onclick = function() {
    var deleteAllItemsAction = new methods.deleteAllItems();
    methods.render(itemData);
  };

  getSelector(selectors.addItem).onclick = function() {
    var addItemAction = new methods.addItem(getSelector(selectors.textInput).value);
  };

  getSelector('['+selectors.deleteItem+']').onclick = function() {
    var deleteItemAction = new methods.deleteItem(getSelector(selectors.textInput).value);
    methods.render(itemData);
  };

})();