What do you guys define as being highly intelligent when in conversation.

Hi,

You guys are certified as gifted. In Mensa gathering your all must meet people whose intelligence has manifested in different form. What is the definition of intelligence that you all have personally arrived. In a conversation with a random similarly intelligent person you just met and do not know about, what is the thing that makes you "oh wow".

Along the lines, some high intelligent people I have met seemly solve complex real world problems but stumble in simple tasks. Does this match with you guys experience in your Mensa community. If so how do you guys explain that.