I said that I am sure the origin of life is explicable and not supernatural.
We have theories, but no-one knows how it happened.
If we do not know about it we can hardly be said to understand it.

Higgs did not get his prize until his particle was discovered.
It was uncertain until then.

The gaps in the table existed because they ordered the elements by atomic mass and there were gaps in that.
They had no idea why the table had to be in that periodic form to work.