Joshua Gans wrote about the book in two posts, the latter linking to Michael's TEDx talk.

True: Joshua Gans published two posts about the book in question on or before October 2011, and the later post contains a link to a TEDx talk by the author named Michael. Mostly true: Gans wrote two posts about the book, but the TEDx link is in the other post or a small detail differs. Mixed: Gans wrote only one post about the book, or the TEDx link cannot be confirmed. Mostly false: Gans only mentioned the book in passing, and no TEDx link appears. False: Gans wrote no such posts about the book.

Set before the research began.

1. E1 Science, with & without the Internet: Part II Digitopoly · 21 October 2011

   “Last week I looked at Michael Nielsen’s new book, Reinventing Discovery, and, in particular, how science can deal with the broader citizenry using online tools.”

2. E2 TEDxWaterloo - Michael Nielsen Michael Nielsen (michaelnielsen.org) · 3 March 2011

   “I’m speaking today about open science at the TEDxWaterloo event, just outside Toronto.”

E1 shows a Digitopoly post from 2011-10-21 that refers to an earlier post on Nielsen's book, but the material does not name Gans as the author or show any TEDx link. E2 shows only that Nielsen spoke at TEDxWaterloo. Under the criteria, the evidence therefore cannot tell whether Gans wrote these posts or whether either one links to the talk.