Talk:Double-chance function

I have read this article several times and I'm having difficulty mapping what I read to the term that's being described. While I understand the process in the description, and gather that it is a very good idea in software development, the term seems idiomatic to me. What is it about the concept that makes it a "double chance"? A chance of what? What exactly is being doubled? Perhaps, in lieu of answering these questions, it would help if there was some explanation for why this particular term was applied to the concept. Otherwise, it seems to me that this is a concept still waiting for a meaningful term or label. Cheers. — Preceding unsigned comment added by 2602:306:8096:2FB0:0:0:0:3E8 (talk) 23:33, 12 May 2017 (UTC)