Why this lender recommends it

"What could be more fascinating than the mystery of Mallory and Irvine? The scenario proposed by Tom Holzel, according to which Mallory continued alone to the summit with oxygen, leaving the less experienced Irvine to descend, was refuted by the discovery of Mallory's body in 1999. It showed a wound around his chest caused by the rope, strongly suggesting that they were roped together and fell together. And then there are mysteries within the mystery. The mystery of the Second Step. Not feasible with the equipment of the time, according to, among others, Rheinold Meissner. Feasible, says Tom Holzel, if you interpret it in a certain way (which I didn't quite understand). And why did Mallory choose Irvine as his companion, inexperienced even though he was very skilled at repairing oxygen equipment? And where did the cameras go? And the photo of Ruth that Mallory had promised to leave at the summit?" - Reviewer on Goodreads.com