Base units, their origin and meaning

Where base units come from and how they are related to each other? The second, the metre and other base units are useful approximations for describing our universe. What we measure are mere ratios between measured values and base units. The fundamental question is how...

The nature and limits of mathematics

What is mathematics? Counting. Counting what? Counting what is distinguishable to our perception. Distinguishability over time – distinguishable objects, processes or feelings must have a certain duration. See e.g. biological species (difference between Devonian...