Fresh requirements recheck

Fresh recheck · What if none qualifies?

100 g, start 10°C, room 22°C, 20 min. Final ≤15°C in EVERY trial; ≤4 tokens; ≤18 mm added thickness. Covered liquid water; cups/lids, mass, starting temperature, duration, exposure and reading procedure match within and across trials. Surroundings stay at the stated room temperature. No ice, phase change, active heating/cooling, direct sunlight or meaningful evaporative cooling. Each trial uses fresh samples. Accuracy is not supplied.

Supplied design record

Constructed teaching data: these values were invented for this activity, not collected in an experiment.

Design

Tokens

Added mm

Trial 1 final °C

Trial 2 final °C

Trial 3 final °C

U

5

14

15

15

15

V

4

19

14

14.5

14

W

4

16

14

16

14

1. Is there a feasible design? Check each failed requirement. Recommend an honest next step without inventing a successful design or changing the rules silently.

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Do not choose a winner merely because the question contains design data. “None meets the brief” can be the supported conclusion.