If you send out a 1000 4-hour take home tests as a screen and 100 people took upon it, you just wasted 396 man-hours of other people time. Creating a bunch of frustration, disappointment, and unnecessarily accelerating heat death of the Universe.
Outside of Madoka Magica (2011), it's pretty safe to say that no human activities we undertake today will have any impact on the heat death of the universe whatsoever.
