Are there any things which today's programming language can't solve or do?
So, we can do a hell lot of things with programming languages. Then, are these languages not capable of doing some/more tasks which are hypothetically possible like simulating 4D,etc...?
well for starters it cant solve problems with infinitely huge numbers. Infinite time maybe, infinite space probably not. And well do stuff in the physical world (yeah robots but thats a machine not programming language)
Not gonna write so long because it's bedtime(GMT+05:30) In short you can't do physical activities.
There is a class of "uncomputable numbers" that cannot be computed by a (finite) computer program. Most numbers are uncomputable in fact. Even though it has infinitely many digits, π=3.141... for example is computable, since we can come up with a 5 lines of code program that would print out all the digits, given infinite time. It's kind of cool that we know a few digits of some of the more famous uncomputables, don't ask me how that would even work. By extension, there are infintitely many problems that a computer cannot and will never be able to solve.
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