The solution then is as the article points out: > An apprentice painstakingly smoothing an invisible surface would be yelled at for wasting time. An apprentice

The solution then is as the article points out: > An apprentice painstakingly smoothing an invisible surface would be yelled at for wasting time. An apprentice failing to smooth a visible surface would be yelled at for producing crappy work. To become a professional, the apprentice learned to work efficiently but still do a good job.