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 broadcast receiving apparatus and a control method thereof, and particularly relates to a technique related to the protection of content.
2. Description of the Related Art
In digital terrestrial broadcasting, content is sent in a scrambled state. The content is scrambled using a Conditional Access System (CAS). At present, a B-CAS system, which uses a smartcard, is employed as such a Conditional Access System.
This system of protecting content (and the copyright of the content in particular) in a broadcast receiving apparatus is called RMP (Rights Management and Protection). A system that encrypts content using an encryption key is used as one system of RMP. For example, in the current B-CAS system, three types of encryption keys, or a scrambling key, a work key, and a master key, are used hierarchically.
Meanwhile, a new content protection system (called a “new RMP system” hereinafter) is being proposed as of late. In the new RMP system, three types of encryption keys, or a scrambling key, a work key, and a device key are used hierarchically.
The scrambling key is changed every few seconds in order to improve the reliability of the content protection. The scrambling key is sent in a state in which it has been encrypted using the work key. The encrypted scrambling key is contained in data called an ECM (Entitlement Control Message).
The work key is also sent in an encrypted state. The key for encrypting the work key is the master key, in the conventional RMP system, and the device key, in the new RMP system. The encrypted work key is contained in data called an EMM (Entitlement Management Message).
The master key is a key stored in the B-CAS card, provided on a card-by-card basis. On the other hand, the device key is a key provided on a maker-by-maker or model-by-model basis. Thus broadcast receiving apparatuses from the same maker or broadcast receiving apparatuses of the same model have identical device keys. Broadcast receiving apparatuses also have device IDs corresponding to their device keys. Broadcast receiving apparatuses hold, as firmware, a program that generates a device key from device key information corresponding to a device ID, and the device ID.
The new RMP system has a scheme for revoking broadcast receiving apparatuses that improperly avoid the content protection (called “unauthorized receivers”). Revoking an unauthorized receiver is realized by updating the encryption key used in the encryption of the content and the encryption key held by an authorized receiver (that is, a broadcast receiving apparatus aside from the unauthorized receiver). At that time, the unauthorized receiver cannot update the encryption key, and as a result cannot decrypt the content (see Japanese Patent Laid-Open No. 2006-74209).
The process for revoking an unauthorized receiver is called “revocation”. The device key is designed so as to be updatable so that this revocation can be executed. For example, when a device key has been tampered with, the old device key is revoked. In such a case, it is necessary to update both the device key used by the broadcasting station to encrypt the work key and the device key used by the broadcast receiving apparatus to new keys.
However, the following problems arise when executing revocation according to the stated conventional techniques.
First, consider the case where a broadcast receiving apparatus with a certain device ID has been identified as an unauthorized receiver. In this case, the broadcaster performs revocation with respect to the broadcast receiving apparatus that has that device ID. However, the broadcast receiving apparatuses that have that device ID include both unauthorized receivers and authorized receivers.
As a result, when the revocation is executed, the authorized receivers that have that device ID are also revoked in spite of the fact that they are not being used improperly. For this reason, users of authorized receivers suffer in that they cannot view broadcasted content.
To prevent users of authorized receivers from actually suffering in such a manner, the maker of the broadcast receiving apparatuses distributes, to authorized receivers, new device IDs, and programs for generating new device keys corresponding thereto. This information is, as described earlier, contained within the firmware, and thus this distribution is realized through a firmware update performed by the broadcast receiving apparatus. Therefore, users of authorized receivers are required to execute this firmware update.
However, if a broadcast receiving apparatus executes the firmware update before the device key used by the broadcasting station is updated, that broadcast receiving apparatus cannot decrypt content, and thus the user thereof cannot view that content.