OK, so we waited for the magic 26 weeks. DS was showing loads of "signs" ....putting things in his mouth, sitting up well, seeming unsatisfied with milk, and that guilt-inducing look of "how dare you sit there eating without offering me any?".
So, I gave him a steamed baby carrot, which he happily "gummed" his way through. A day later I see undigested pieces of carrot in his nappy.
Surely this is a sign that his gut is not ready for solids. What is the point in him eating something that passes straight through him undigested ? And isn't it the open gut thing that causes allergies ? That said, if I had pureed it, presumably I would never have known!