110-2-11

Some psychologists claim that, in theory, the best way to understand another person would be through deep empathy, whereby one would gain a direct and complete grasp of that person’s motivations. But suppose they are right; then there would be no way at all to achieve understanding, since it is psychologically impossible to gain a direct and complete grasp of another person’s motivations. But obviously one can understand other people; thus these psychologists are wrong.

C: confuses a theoretically best way of accomplishing something with the only way of accomplishing it

How is the argument committing this flaw?