The Jomon are very ancient and Graham Hancock has documented some interesting findings about them in his Underworld series of programmes. Then again Eric Van Daniken has proposed some unusual hypotheses about the glare goggles found on ancient Polynesian statues - just think 'cargo cult'.

And Jane, what makes you think those stones were polissoirs? (Sorry for me spelling). What if the rocks attributed as edge tool sharpeners were actually just sculptures in their own right? British and South Sea. Nobody's going to change their mind but context is everything - look where they're found. (Perhaps just where you need a sharp blade for ritual sacrifice!)

Just as I was wrong about malaria I was also wrong about fungi. Not P. mexicana there but P. cubensis. Same chemicals, different species. I just wish I could remember which bits of Cook they got back. (I spiralled off onto Roy Harper thread as consequence - he's still alive and living in Cork).