If you are going to DebOOonK an expert then you have to at least provide a source with credentials of equal or greater relevance.
Says the man who thinks that Rowbotham, a medical doctor, has DebOOonKed centuries of the finest minds in scientific history.
What "credentials of equal or greater relevance" does he have exactly?
I refer you back to my handy graph. The amount you care about someone's qualifications depends entirely on whether what they're saying fits your world view.
Even then, it merely shows that some experts disagree with each other.
Right. So we have one "expert" saying "THE CHANCES OF BIDEN WINNING WERE A BAJILLION TO ONE!!!11!!1!"
And we have another mathematician patiently explaining why that analysis is bogus.
Quite a few actually, multiple sources have now been provided to you. I just thought the video was a good one because he explains it all so clearly.
If you can't be bothered engaging with the actual argument - and your continued failure to do so is noted - then the headlines are the original analysis is based on two premises
1) The voter split in 2020 would be the same as in 2016
2) The "population" of in person voters is the same as mail in voters.
Neither of these is true.
The first one - of course the voter split won't be the same in 2 different elections. That is literally why you have elections every few years because over time people change their minds about things.
The second one - it was known before the election that the on the day in person votes would be skewed towards Trump - because he was telling his supporters to vote in person. And the mail in votes were going to be skewed towards Biden because he was telling his supporters to vote that way.
So saying "Hey! That's odd, what are the chances that the split in vote between Biden and Trump would be different in those two populations, they're people from the same State!" is idiotic.
Of course the split is different because the two parties were encouraging their supporters to vote in different ways.
This was known before the election.
Your inability to understand or engage with the actual argument is not doing you any favours.