On Mondays, I have been attending lectures in Cambridge on cosmology. This is part of my University of the Third Age course. It is very hard, quite the hardest course I have ever attended
Now, one thing is clear. We really know so very little. Yes, the theories hang together pretty well, but there is so much we do not understand. Take, for example, dark matter. Apparently this has to exist for the universe we know to exist. Sadly, we haven't a clue what dark matter is!
Also, time. We experience this as linear flowing from the past into the future. Some think time itself is an illusion created by man. Some think there are an infinite number of universes.
All we can be sure about is that whatever we believe today will be wrong or, at best, incomplete.
Despite all that I have learnt, I am left with a feeling that some time in the next 100 years a new theory will emerge that we will find hard to fathom at first, yet will soon help to comprehend some of what we do not understand.
It is hard to think about what we don't know about. Early in the last century, the Internet was impossible to conceive. What will the next 100 years bring?
