Counterfactually speaking, how do _we_ know that we are not the ones looking 'up' the power spectrum, as it were? (I am joking of course; even though I would n

Counterfactually speaking, how do _we_ know that we are not the ones looking 'up' the power spectrum, as it were? (I am joking of course; even though I would not say that LaTeX is the 'best' solution for all use cases, I can at least state with confidence that it satisfies some properties that traditional word processing tools do not have.)