Saw The Tinderbox Way on Amazon while browsing for second brain books, was curious if it was the official, supported, and updated version from Eastgate?
Pretty sure that Kindle one is out of date. Copyright 2006-2017
I just checked on my phone and the Kindle app there shows it (sample) as 2ed, looking at the sample content think it is indeed only the 2ed. My Apple Books version is 3ed which has a distinct preface and is Copyright 2006-2017.
Confirmed it is the second edition. Purchased and returned.