[Willie Green]

Thor put his life on the line and went out and conclusively proved that what he claimed could, in fact, have been done with ancient technology by simply doing it himself.

No doubt that Thor Heyerdahl's adventures were both interesting and hazardous.

But from an objective perspective, his "conclusive proof" is pure junk science.

Fabricating "evidence" is not "proof".

The only "proof" we can ever obtain lies in whatever archaeological artifacts and manuscripts we can recover.
Many things will never be known conclusively.

That said, Thor Heyerdahl: RIP. You made some entertaining documentaries.

[The Man]

This man proved it could be done.

However, to prove that it actually was done, one needs to have the evidence you spoke of.

Thus, his voyages proved it could be done, which negates the impossibility argument. When people, including scientists, believe something is impossible, they will tend to go to great lengths interpret away evidence which tends to prove that it happened.

That is why you shouldn't dismiss his work as irrelevant.