Yeah it is, actually. Which is the reason I am bringing up the 5 star Sol question.
I would certainly make a guess that it has no tail side. But in an infinite universe with an infinite amount of time…and with some people I know having time to “tweak” the coin…I suppose a billion heads in a row could be possible even with a coin having both heads and tails.
I do not know.
Please refer to my answer up above.