Physical Q.E.D - Why settle for less?

QUOD ERAT DEMONSTRANDUM - Has the meaning changed over time?

Discussed in the context of physical(s), sensible(s) and mental(s). Looking at the words used in the sophistry of mathematical physics - the doctrine of ratio and quantity - Have we correctly mapped physicality and sense perceptions to attain real measurements, resulting in real knowledge? Why does the bar for evidence of objective truth no longer require physical practical demonstration? Maths is not reality and should never be confused with it.

Slides on Public google drive:

Level Earth,common sense,direct reality,