Leg

It is interesting how different legs are between men and women. There is a different structural design in the two, and we can see similar differences elsewhere in nature. In the case of humans, women tend to have more mass at the bottom and men at the top. In general, women's legs tend to be proportionally larger than men's.

Why might this be? There must be an evolutionary reason. We can form hypotheses, but as with many things, these must be accepted as provisional truths until new knowledge emerges. And that last point, I think, is always worth remembering.

I am reminded of a moment at university when a classmate was giving a presentation and said that neurons die and no new ones can form. The teacher interrupted and said that his source was probably an old textbook — because that was what people once believed, but it had since been discovered that new neurons can in fact form.

We study based on old information, and teachers either cannot keep up with current knowledge or they lack real experience — repeating only what they have read, not necessarily what they have lived. We must always be cautious about what is considered truth today, because tomorrow it may be expanded and transformed into a richer truth. This is what I call provisional truth.