Nobody should stop him from talking, of course, but I don't see any good reason for anyone to listen for more than a few minutes, either. Neither the scientific community nor society as a whole will benefit from spending time and energy "debating" ideas past the point where it becomes clear that they're fundamentally flawed. New, innovative ideas are great, but it turns out that we already know an awful lot about how the world works, including lots of very precise measurements that any new theory must match to be worth considering.
And if this talk is any example, Sheldrake really doesn't know what he's talking about, at least where physics is concerned. If he understood what we mean by "we've now defined the speed of light to be constant", he'd phrase his arguments differently (regardless of whether they're actually right or wrong). I certainly wouldn't call for his books to be burned, but I suspect the world might be a little bit be better off if they'd never gotten wide attention and distracted valuable brain cells from more useful tasks.
And if this talk is any example, Sheldrake really doesn't know what he's talking about, at least where physics is concerned. If he understood what we mean by "we've now defined the speed of light to be constant", he'd phrase his arguments differently (regardless of whether they're actually right or wrong). I certainly wouldn't call for his books to be burned, but I suspect the world might be a little bit be better off if they'd never gotten wide attention and distracted valuable brain cells from more useful tasks.