Question

This might come off as a really silly question. But I'mwondering (especially in the case of food) if there is any reason afly would continue to try and sit on top of a piece of food evenafter swatting it away. I assume (it could be misconception) thatit is instinctive that animals and insects would leave an area ifit is harmful / dangerous to their existence after having closeencounters more than once. Is this not the same for the fly?

I have this question mainly because I recall waving a fly awayseveral times while eating lunch, and I couldn't understand why thefly wouldn't just find another place where there is food orsomewhere safer.