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:

Writing a Regex pattern to find IQueryable chained methods without a Select method

In the web application I'm part of a team of developers working on, we use Entity Framework as an ORM. When we perform SQL queries we typically chain link the IQueryable methods Entity Framework offers, beginning with a method Items(), which is our project specific model projection of the DbSets. I've been trying to write a Regex pattern that will find queries that doesn't use a Select method.
This is what our code typically looks like
Cars.Items()
  .Where(x => x.Year == "1988")
  .Select(x => new { x.Registration })
  .ToList();

Cars.Items()
  .Where(x => x.Id == 1923984)
  .Select(x => new { x.Registration })
  .FirstOrDefault;

This is the kind of query I'd like to find
Cars.Items()
  .Where(x => x.Id == 1923984)
  .FirstOrDefault;

I've tried using a negative lookahead to exclude queries that have a Select() method, but they are included, and I'm struggling to think of an alternative approach.
\.Items\(.*\)(\s*\..*\(.*\))*(?!\.Select\(.+\))(\s*\..*\(.*\))\;

I'll break down my logic

\.Items\(.*\) All queries begin with this method
(\s*\..*\(.*\))* Any number of chain linked IQueryable methods
(?!\.Select\(.+\)) Should exclude a Select() method
(\s*\..*\(.*\))\ This could be a First(), FirstOrDefault(), Single() or similar
; Ending the query

A:

The reason the negative look ahead isn't working because you have capture everything already with this part:
\.Items\(.*\)(\s*\..*\(.*\))*
You need to first look ahead negative and then include everything. Try this regex: 
\.Items\(.*?\)(\W.*(?!\.Select\(.+\)))?(\W.*)?\;
Try it out here: https://regex101.com/r/vu9mQ0/2

A:

I've also tried my hand at creating a regex for this. You can test it here: https://regex101.com/r/qRU2sP/5
Regex: Cars(?>\.(?!select)\w+(?:\([^)]*\))?\s*)+\;
The small difference from the answer vendettamit gave is that this one captures the whole statement.
Edit: So how does it work?
I try to capture repeating parts (the .Items() or .Select()) so that the pattern is easier to maintain/follow.
Cars
I've put Cars at the start because this way the regex engine knows asap if the next set of characters is interesting or not. This decreases the amount of steps needed. Could also be replaced by \w+ but then more steps would be made because more characters in the whole text match that.
(?>
I start an atomic group here. This means that the regex engine won't backtrack while following the regex pattern. This improves performance a lot because if a part of the pattern fails it won't try other possibilities. More detail here.
\.
Match the . character literally.
(?!select)
Negative look-ahead - only match if not select. I've used the case-insensitive modifier on regex101.com but C# also supports this. Otherwise just change it to [Ss]elect.
\w+
Match any word character a-zA-Z0-9_ at least once. This matches the where or select part of the text.
(?:
I start a new non-capturing group here. I do this because the next piece of the pattern is optional (the () part of the methods/lambdas).
\(
This just matches the ( character literally.
[^)]*
This matches everything (including nothing. See the *) UNTIL the ) character is encountered.
\)
Literally matches the ) character.
)?
I close the optional (see ?) group. Remember, this is the part of the () of each method/lambda but it might also be a property so the () part must be optional.
\s*
Matches any whitespace character (like space, tab and new-lines) as many times as possible.
)+
Here we end the group that matches the .Where(x => x) parts of the text (at least once. see +).
\;
Matches the ; character literally.
That's it! So the biggest cheats on the performance are the Cars part and the (?> atomic group.