which normal aspects of human life do politicians understand the least?

[Starry Eyed Jagaloon]

I'm gonna say the first three and other: normal human interactions. They can be a socially weird bunch. I think the biggest blind spot of politicians is a general lack of practical expertise about anything.

Re: the other options. Most elected officials don't actually earn that much and most have had actual jobs at some point in their lives. They still have to budget their income and go to the supermarket. Most people (thankfully) never experience actually being poor/hungry--politicians presumably being included.