I think they mean both "know about a lot of different fields" and also "be able to connect them together to draw inferences", the latter perhaps being tricky?
>>reveri+(OP)
Maybe? They should speak more clearly regardless, so we don't have to speculate over it. The way you worded it is much more understandable.
>>boolea+er
There wasn't much room to speculate really, but requires some knowledge of understanding problem spaces, topology, and things like minima and maxima.