So, my architect is keeping out of light and lamp choices (she's unhappy because she wants more money - well, that, and my girlfriend vetoed the terracotta tiles she suggested - why she should care about that is not so clear, unless she was looking forward to add the pictures to her portfolio). The builder will still install them, but I have to choose them.   In brief: what is there to know about lighting? - Sure, one has to choose more lux (lumens per sq.m.) for a working space t