Logical Reasoning

PT157 · S3 · Q7 News report: Some recently invented

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News report: Some recently invented television screens are built out of small tiles seamlessly joined together, each tile a separate miniature screen.

Facts

comparisons For a noncompound screen a few inches thick, larger screens >> dimmer screens vs. For a compound screen a few inches thick, an unlimited number of quite-bright tiles can be joined together without making the screen any dimmer or thicker.

Evaluate

The stimulus provides a comparison between noncompound screens and the new, recently invented compound screens.

A noncompound screen that is just a few inches thick will get dimmer as it is made larger. However, since each tile in a new compound screen is bright, and an unlimited number of tiles can be joined together without reducing the brightness, it follows that the new compound screens can be made very large without becoming dimmer (or thicker).

Goal

No specific prediction here, other than we'd predict that we're going to be rewarded for understanding that this new screen-tile technology allows us to make screens brighter without them being dimmer or thicker.

7.

Which one of the following can be properly inferred from the information in the news report?

  1. The technology used to make

    Unsupported Distinction

    Nothing suggests compound screen technology is inappropriate for small screens. The ability to go large does not mean small is impossible. A few tiles could make a small, bright screen.

    2% picked this

  2. There is a great consumer

    Out of Scope

    The stimulus describes technological capability but says nothing about consumer demand. On Must Be True, we usually can't derive any ideas that bring up concepts we never talked about.

    3% picked this

  3. In a television set with

    Unsupported Relationship

    This a super strong Volume Dial style claim, and we have no evidence that changing thickness affects brightness. We know that for noncompounds, the larger the set, the dimmer the screen. So we could say the smaller the set, the brighter the screen. But there's no causal relationship offered between thickness and brightness in noncompound screens.

    6% picked this

  4. Correct

    Television sets that are just

    Why this is right

    The new compound screens, which are just a few inches thick, are composed of tiles that are "quite bright". And an unlimited number of tiles can be joined together without becoming less bright or thicker. So we can make a screen that is very large and still bright.

    Skill tested: Must be True · how this choice captures the argument's function is the move to repeat next time.

    81% picked this

  5. Television sets with compound screens

    Too Speculative

    The stimulus only mentioned advantages of compound screens, but that doesn't mean that they only have advantages. There could be many drawbacks not mentioned: higher cost, lower resolution, visible seams, shorter lifespan, etc. Silence on disadvantages does not indicate their absence.

    8% picked this

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