Yeah, the idea was so obvious, you didn't even bother to write it up... (smile)
I burp once in a while and I almost never have any warning.
Maybe it was kind of like the sneeze in "The Hitchhiker's Guide to the Galaxy".
I was messing around with my wristwatch calculator and came up with the exact same conclusion.
Sean Carroll, a cosmologist at the University of Chicago, US, says, "I don't really understand what they're doing.