4 ms·
> It's marked as Known Unknowns, but what is unknown? The infinite digits of pi that we don't know. But we do know that they exist, so pi, or any other irratio
by MrBlueIncognito 4y ago
> It's marked as Known Unknowns, but what is unknown?
The infinite digits of pi that we don't know. But we do know that they exist, so pi, or any other irrational number, will aptly be called a "known unknown."
> Virtually all numbers are irrational.
For every n irrational numbers you name, I can name n+1 rationals. There is no firm basis to the argument that there are somehow more irrational numbers than rational numbers.
- tgv 4y agoDo you reject Cantor's proof then? That takes mathematical bollocks.
- beardyw 4y agoWithout wishing to defend it, the gotcha here is "numbers you name". Rational numbers are "named" by putting together a string of digits. That is not possible for the irrationals so the only ones we can name are a handful with alphabetic names. There are more sheep in a field than those. I think Cantor can rest peacefully.
- ErikCorry 4y agoExtend alphabetical names to alphabetical descriptions and you have a countable number of irrationals. It's a bit suspicious that we can't name or describe any of the uncountable irrational numbers, isn't it? Not even a single example. Cantor's proof is not constructive. It doesn't name an example. If you enumerated all irrationals based on the algorithm required to calculate them then the contradiction in Cantor's diagonalization proof just turns into a failure to terminate. But that suggests that there are fewer irrationals than integers, not more.
- beardyw 4y agoIf you reduce the irrationals to those which can be named you are probably right. I think I said that before.
- ErikCorry 4y agoNamed or described.
- tgv 4y agoYou're limiting the existence of real numbers to our (human) capability of mentioning them. To me, that seems a rather arbitrary limit. Did I understand you correctly? If so, why do you accept infinity in the first place?
- deleted 4y ago[deleted]
- johnday 4y ago> For every n irrational numbers you name, I can name n+1 rationals. I name "x+pi for every rational number x". Good luck!