Assuming Satoshi was Adam Back, then why would he take 10+ years* to release the white paper, which borrows much of the work he had already done on the problem of digital currencies? Someone with the perfect background, who was so active in theorising ways to make it work, who was so well versed in the prevailing ideas and was clearly working on the subject, wouldn't just drop it for 10 years, nor likely take that long to put it all into a workable system. That question is never posed in the article, and I think it's a very important one.

* I'm extrapolating this timeframe from the quotations compared in the article.