Viesturs vs Simonson 1987: Who is telling the truth?

A review of conflicting accounts of the Viesturs/Simonson 1987 climb of Mount Everest.

This was in a thread I started over on a Thom Pollard video, and this video outlines the three different accounts and ultimately concludes that Viesturs' account is correct. (https://www.youtube.com/watch?v=5ZRacaWu8U4 )

Poston's account: https://people.wou.edu/~postonp/everest/MyTheoryPt1.html
Fair use:
http://publications.americanalpineclub.org/articles/12198826603/Asia-Tibet-Everest-Attempt-via-the-Great-Couloir

Видео Viesturs vs Simonson 1987: Who is telling the truth? канала Michael Tracy