We only have to look at ourselves to see how intelligent life might develop into something we wouldn't want to meet.
In real time, the universe has a beginning and an end at singularities that form a boundary to space-time and at which the laws of science break down.
I enjoy all forms of music - pop, classical and opera.
Someone told me that each equation I included in the book would halve the sales.
If you are lucky enough to find love, remember it is there and don't throw it away.
Time and space are finite in extent, but they don't have any boundary or edge. They would be like the surface of the earth, but with two more dimensions.