I'm only midway through it, but its hypothesis is that (a) we typically draw using preconceived symbols and (b) we can improve the accuracy of our drawing if we

I'm only midway through it, but its hypothesis is that (a) we typically draw using preconceived symbols and (b) we can improve the accuracy of our drawing if we learn to ignore these symbols and focus on what we can literally see (ie., shapes and colours). I don't know how universal this perspective is, but as a beginner, I have found the approach to be helpful.