My thought today:
The point at which some people stop paying attention to what someone has said is sometimes more revealing than their answer.
Thus, what they don't mention can be more relevant than what they do.
Have you tried using bone conducting headphones?
When you are out on your bike, you can hear the music and listen out for traffic as well.
I bought a set, but the volume is not great. However, they work.
I find particular importance in Stephen Hawking's theory for explaining how the universe works. The best for me. Indeed the singularity is the beginning of our system with the big bang, and the supermassive black holes for the galaxies. Knowing that a collapsing star can become a singularity, is considered for my part as the singularity of the so-called solar system. Obviously, and from this mechanical deduction, the center of the earth should also be considered as a singularity.