As well known, 2/3 ain't bad.
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. ....
BTW, I believe the parent comment that you're replying to is a lazy joke referencing an old '70s song, not a serious argument.
You make a good point.
Or your belief is a lazy attempt at understanding it, and you missed the double entendre even though you agreed with the point...