In this case, what I wanted to say was that politics is deciding what to do next to get the best outcome given a set of constraints. In that context, "real world" to me means the clearest understanding of what the constraints are and what we should do to get the best outcome.

It isn't a question of manual vs. non-manual in my mind. areoform was picking out a list of people who typically aren't exposed to the actual constraints because they are in the top ~10-20% of the social hierarchy, and usually only specialise in one specific area as opposed to understanding the total situation. Someone who has immanent and structural problems putting food on the table or keeping employment will have a much better idea of where the urgent pain points in an economy are than, say, a dev at Stripe.

The people close to the happy tail end of the distribution for comfortable lifestyles aren't going to have a good understanding of the median or hard tail. Some do, most don't. People who live the risk of doing without food have a much better understanding of how bad the current food shortages are than I do, for example. Despite being quite interested in the crisis I have to really go out and look to figure out whether the situation is normal, a little bit worse or immanent threat of large numbers of people who had food last year running out.

Basically, in short, it is easier for someone average to figure out what the experience is for the average person. Which is one of the most important experiences for figuring out whether a policy is working or not. The median voter is quite well connected to the experience of the median voter, much better than people like me who have to use statistics and guess what their experience is.

Thankyou for drawing my attention to the fact that my language was excessively vague.