chong

I don't know if there's a way to answer your question. Unfortunately, in this case, at what level do you say that one side or the other is right? Academia might tell you that it's impossible, but people like Mauro say that they've seen indigenous people in Brazil may have been doing it for centuries. From my point of view, I believe that, strictly speaking, there both truths and falsehoods from both sides. The problem is proving facts and to what degree. It would be like answering the question of "If a tree in the forest falls down, and no one is there to hear it, does it make a sound?" If you answer, "Yes", or "No", would that be enough? How do you go about proving either one? The truth is that it does, because you can prove it by comparing and reasoning. But under the parameter, "and no one is there to hear it", proving it to be a fact, or non-fact, is impossible. (To differentiate: fact is experienced and/or observed; truth implies revelation which is accepted by reasoning or faith.)

So then, whether grafting bananas is possible or not, boils down to whether you can believe it, or experience it. Having said that, I believe that it is possible.