What are the import and meaning of like in 'to seem like' ? (https://english.stackexchange.com/a/11324/50720 is mute on this.) Why is like necessary? 'seem' alone already means:
seem [no object] = 1. Give the impression of being something or having a particular quality
Based on http://grammar.ccc.commnet.edu/grammar/conjunctions.htm, I guess that like here is a preposition and not a conjunction? How do you determine/deduce this rigorously?
Strictly speaking, the word like is a preposition, not a conjunction
Obiter dictum: I focus on 'to seem like' here, compared with this question on the differences.