In response to: Math prof: Be careful what we do with infinity. Weird things can happen: “Some weird things are like 1 = 0, not just weird, but undesirable. So we try to build our mathematical ideas to avoid those. But other weird things don’t contradict logic, they just contradict normal life,”

a reader writes,

Indeed, when you introduce ‘infinity’ into your equation, one of the (far worse than “weird” or “undesirable”) results you get is that 1=0 , which is a logical contradiction/impossibility (which is to say, utterly impossible).

Or, to put this another way, you can “prove” anything with a false premise.

And, this “result” that 1=0 is one more way we can know that the age of the universe is not infinite.

*See also:* Durston and Craig on an infinite temporal past . . .

and

Cosmologist: In an infinite multiverse, physics loses its ability to make predictions. And that’s okay.

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