An interesting and unexplored area in the World of errors are those made through ‘visual impressions’. Positions often look better or worse than they actually are with this impression only being corrected by deep and accurate analysis. When players are unable to make such analysis they can fall victim to their impressions rather too often.
A nice example of this effect can be seen in the Albin Counter Gambit in which many White players don’t like the look of Black’s d-pawn after 1. d4 d5 2. c4 e5 3. dxe5 d4. What do they do? Try to exchange it of course with 4.e3. But this can land them in very deep trouble.