One little nit to pick: acrylics and oils are not even close to similar in handling ("open time") or tonal range, which makes acrylics inappropriate for many st

One little nit to pick: acrylics and oils are not even close to similar in handling ("open time") or tonal range, which makes acrylics inappropriate for many styles of painting. They're great for thick impasto and brighter colours, but they don't hold up well at all for classical oil-painting styles. (They're a lot like tempera in that respect; chiaroscuro marks the beginning of oils and the diminishing of tempera because the binder doesn't permit non-black pigments to be as dark as oils do.) Alkyds are a little friendlier for quick work, and do have real depth, but they lock up nearly as quickly as acrylics while requiring nearly as much polymerization time as oils before they can be varnished. Believe me, artists would love a medium that has the optical properties and open time of oils (which can be hours to days, depending on the pigment and the use of dryers), but didn't have a tendency to yellow and could be properly finished in under six months. It just doesn't exist yet.