That was a fairly decent evaluation, though it lacked a certain passion. Both concise and precise though, so you earn points for that. I particularly like the word "jest". 8/10.

-Critic of Comment Critics.

tell the person to think of a number (lets say they chose 4)
then tell that person to add/subtract random numbers.
for example you tell them to add 4 (the number in their head is now 8)
then tell them to subtract 1 (number is now 7)
then tell them to add 5 (number is now 12)
then say subtract the original number they thought of (12-4 is 8)
then you say 8

now how did you get 8?
look at your directions..
you said 4-1+5 and that is 8
the trick is to only tell them to add or subtract and to tell them to subtract the original number they thought of. It will always work!!