Neutrino

Why we stopped at 1,800 Kelvin

We could have gone lower. Candlelight is about 1,850K and firelight is lower still. We went to 1,800 and stopped, and here is the argument.
Why we stopped at 1,800 Kelvin

A room lit from the side

Overhead light flattens a room and everything standing in it, including you. Here is what changes when the source comes down and moves sideways.
A room lit from the side