My main objection to Kontiki was that it started from wrong assumptions - that it had to be South Americans who travelled to Polynesia, because of Heyerdahl's,

My main objection to Kontiki was that it started from wrong assumptions - that it had to be South Americans who travelled to Polynesia, because of Heyerdahl's, well, lack of imagination, I guess? The El Nino Southern Oscillation (ENSO) was identified in 1924 (but not really researched until the 80s, to be fair), and its effects on currents and more importantly prevailing winds well known to Chilean fishermen at the very least, nevermind the knowledge still retained in Polynesia.