One of the strange things that our children and grandchildren will find about us is that we distinguish between numbers and reality, and between virtuality and reality.

Our grandchildren will think that we have a strange thing, that is, we will distinguish between numbers and reality, and between virtual and reality.

Note: The author wants to emphasize that computers will develop rapidly in the future, and the difference between virtual and reality may be negligible, so future generations will find this distinction strange.