Plato's Meno, Knowledge as Recollection, and Instinct

I just spent a good bit of time reading, grading, and giving feedback on my students' short papers grappling with a key theme in Plato's dialogue, the  Meno - the Platonic doctrine of knowledge as recollection. 
After requiring them to explain that doctrine - that we human beings already have knowledge within us, which we learned in a previous bodiless state of existence, and which teaching can help us recall - I asked them whether they found Plato's view on knowledge plausible. ...