[pseudoramble]

Thanks - This is exactly what I was doing thinking back on it! I found it surprising because I landed on the same answer they did even with my misunderstanding of the statement. Ultimately I ended up figuring out this sequence:

> 1 + 1/2 + 1/4 + 1/8 + ... = 2

But this now seems like I got kind of lucky, and it might not always hold up generally.