Question: can you identify the most intelligent brain by looking at two different brain cells?

Robert Lees answered on 13 Nov 2015:

Your brain works together to give you intelligence, a lot of brain cells play a part in this. So you would need to look at all the brain cells working together to figure this out.

If somebody had a very bad problem with all of their brain cells, then we could probably say that their intelligence would be low, but they also would have other very serious problems with movement and speech. Working out small difference in intelligence would be too hard!