Leftfield meaning unconventional, perhaps more commonly said is 'out of left field.' > Whether Trump is a troll or not depends on whether he's telling the trut

Leftfield meaning unconventional, perhaps more commonly said is 'out of left field.' > Whether Trump is a troll or not depends on whether he's telling the truth Does it, though? It could equally apply to someone who feigns ignorance of the truth. For example, someone starts talking about a topic. You're an expert in the topic but disagree with his assessment. You pretend not to be an expert and ask questions. He thinks he's helping you understand while in reality you are goading him into overstating his position and proving him wrong. There may be some deception as to your level of knowledge but the underlying argument isn't necessarily untrue.