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]


1. Field of the Invention
The present invention relates to a starter that starts an engine by pushing a pinion with a shift lever so that the pinion meshes with a ring gear of the engine.
2. Background Art
A structure often adopted by a starter of this type is as follows. That is, a lever device (shift lever) provided with a lever ring is swayed by exploiting a plunger attracting force of a magnet switch. A pinion provided integrally with a clutch shaft (output shaft) is then pushed in an axial direction by the lever ring and meshes with a ring gear to get the engine started. After the engine is started, the pinion is demeshed from the ring gear.
In order to start the engine, it is necessary to form the clutch shaft to be able to rotate at a high speed. Also, in order to allow the ring gear and the pinion to mesh with each other, it is necessary to form the clutch shaft to be movable in the axial direction and thereby become able to operate in association with an operation of the lever device including the lever ring. Further, in order to prevent displacement between the clutch shaft and the lever device, there is a case where the clutch shaft and the lever device are coupled to each other.
In this case, the starter adopts a fall-off preventing structure. More specifically, after components, such as the lever ring, a stop ring, and a washer, are attached to the clutch shaft, these components are fixed to the clutch shaft with a snap ring so as not to fall off (for example, Patent Document 1).
A C-type snap ring, which is a circular ring with a uniform peripheral rim width and having a notch, is used as the snap ring and serves as a retainer for the respective components when the engine is started normally. However, in a case where the pinion is not pushed back after the engine is started and the ring gear and the pinion remain in a meshed state, there occurs a phenomenon called an overrun that a motor rotates excessively due to rotations of the engine. In order to avoid this inconvenience, the starter of this type is provided with a one-way clutch. Nevertheless, it is still impossible to prevent an overrun at a predetermined region between the clutch and the pinion, that is, the clutch shaft to which the snap ring is attached, and the clutch shaft and the snap ring rotate at a high speed. Accordingly, an excessively large centrifugal force of the clutch shaft in a radially outward direction acts on the snap ring attached to the clutch shaft. As the clutch shaft rotates faster, the snap ring may possibly undergo deformation because of an increasing centrifugal force. When the centrifugal force exceeds fixing force of the snap ring, the snap ring may undergo expansion deformation to the extent that the snap ring falls off from the clutch shaft. As a result, the stop ring and the washer fall off from the clutch shaft. In a case where the lever device is unable to push the pinion provided integrally with the clutch shaft in the axial direction, the engine fail to start. In a case where the lever device is unable to demesh the pinion from the ring gear after the engine is started, the starter is damaged by the overrun. The starter in the related art therefore has a problem that the reliability is deteriorated considerably.
As a countermeasure to prevent a fall-off of the snap ring, the rim width of the snap ring may be increased to make the snap ring more rigid, so that the snap ring has not only the fixing force necessary to regulate the respective components attached to the clutch shaft in the axial direction but also the fixing force high enough to withstand the centrifugal force of the clutch shaft generated while the clutch shaft is rotating at a high speed. Another countermeasure may be to provide a holder that is fit onto the snap ring shown in FIG. 7 of Patent Document 1 from a radially outward direction to prevent the snap ring from undergoing deformation due to the centrifugal force, thereby making it possible to prevent a fall-off of the snap ring.
Patent Document 1: Japanese Patent No. 4375314
According to the former countermeasure to prevent a fall-off of the snap ring, however, because the snap ring is made more rigid by increasing the rim width thereof, a large force is necessary to attach or remove the snap ring when the starter is assembled or disassembled. The former countermeasure therefore has a problem that attaching and removing workability becomes poor. Meanwhile, the latter countermeasure requires an extra work to attach or remove the fall-off preventing holder when the starter is assembled or disassembled. The latter countermeasure therefore has a problem that attaching and removing workability of the snap ring becomes poor in comparison with a structure having no fall-off preventing holder.