I think of it this way:

1. Suppose we tested on 1 datum and got 0/1. Not good.

2. How about just 2? 1/2. Hmm.. coin flip.

3. Ok, let’s do 3. 2/3. Well, better than half but it’s easy to get 2 heads on 3 coin flips.

4. ....

1/2 being equivalent to a coin flip is only true if we're looking at a binary value. In reality, much fewer than one in two coin flips would accurately pinpoint the location of an ancient city. Even if it only worked half the time, that would still be much better than random chance.

BTW, I believe the parent comment that you're replying to is a lazy joke referencing an old '70s song, not a serious argument.

> BTW, I believe the parent comment that you're replying to is a lazy joke referencing an old '70s song, not a serious argument.

Or your belief is a lazy attempt at understanding it, and you missed the double entendre even though you agreed with the point...

Ah I missed it!

You make a good point.