When we try to observe things that are very small, the act of observation itself will significantly disturb the state we are seeking to measure.
There is no reason that the universe should be designed for our convenience.
We can predict the present without having to know everything about the past.
We can never know the origins of the universe. The deepest secrets are the ones that keep themselves.
Some things are as they are regardless of what they were.
If all the stars and galaxies in the universe today were smoothed out into a uniform sea of atoms, there would only be about one atom in every cubic meter of space.