And to go the other way, it doen't happen like that because the rule of thumb isn't p=0.05, it's p<=0.05 - and p can be quite small indeed, if you run out of id

And to go the other way, it doen't happen like that because the rule of thumb isn't p=0.05, it's p<=0.05 - and p can be quite small indeed, if you run out of ideas before running out of data (such as might happen in a novel area).