Comment by gerdesj

Enamels vs acrylics. Brush vs airbrush vs air gun (not to mention sponge, cloth and even toothbrush). Your air brush can have one or two controls - one for the amount of compressed air and one for amount of paint. For models like airplanes and tanks, a single control is enough to get a flat smooth finish.

Then you discover washes and other techniques and it goes on 8)

I still have a scar in the side of my thumb where I stuck an Xacto blade into it, 45 years ago.