data, data, data
Headcount vs Revenue

Neat two-dimensional diagram of how to catch a breeze. Room apertures and wind direction.
x No effect.
▲ Almost no effect.
△ Meh.
○ Nice.
◎ Maximum effect.
And remember that apertures of different sizes are better than same sized ones, and at different height too. https://t.co/hoeyZAYvEj