hello. the question is: if i have an exact model (and i mean EXACT) of, say, a glider (you know, those whaddamacallits, white things, long, thin wings, those ones), if i have one of those, why will it not fly as well as a proper one? (the model is a lot smaller than the real thing) i was told that the air does not flow around a small wing as well as it does around a large one. is that true? if so, why so? thanks.