[b_tterc_p]

https://dilbert.com/strip/2001-10-25

Philosophically, no it is not possible, though neither can any natural phenomenon for which we reasonably rely on for randomness.

Practically I suppose your goal is just to generate numbers such that the next number cannot be predicted given only the previous numbers but also without considering any outside knowledge. Potentially possible. Potentially impossible to test. If you can beat the test, it probably just means your method beats that specific test

[seventhtiger]

Aren't there algorithms which reliably beat humans at rock paper scissors?

[b_tterc_p]

There are algorithms that beat most humans, because humans don’t play randomly. Conversely there are humans that can beat the human-beating algorithms reliably because the algorithms don’t play randomly either.