Which Charlie do you like best?

I would say the Charlie with IQ of 200. He understands the mentally retarded people's troubles better and although he is overly critical of people he still has a good heart and is more humane than the Charlie for is so dumb he cannot understand anything and and doesn't know what humane is. He also wants to do something for them after witnessing the mentally challenged dishwasher's incident because he was once like the dishwasher with low IQ.

I do not think that science should be used to artificially increase one's intelligence.Anything that God has given you should be appreaciated.Even if Charlie had an IQ of 68 he was honest and pleasant which is a good quality in people. If you try to artificially increase your IQ it will revert back to your original one in the end and might even bring negative effects .