I'd like to ask something regarding a widespread notion on MBTI and Socionics. I've seen alot of people saying that it's possible to directly convert types across both systems, but I don't understand how that's possible when both systems define their types differently since the types are based on different criteria. Socionics defines it's types based on the IEs. MBTI defines it's types based on cognitive functions. Cognitive Functions and IEs are defined differently across both systems, so shouldn't that make direct conversion impossible ?
Also, to give an example of the difference in definitions, Fe in MBTI is defined as being about other people's values whereas in Socionics it's about emotions. It's the Feeling and Sensing functions that are defined the most differently across both systems.