It is quite a popular idea that we are all just living in a simulation. The idea is that in due course there will be infinite simulations of us in the universe yet only one real universe, and as such the chances of us being part of one of those countless simulations rather than existing in the real thing is extremely high.

It is all very nihilistic.

Simulations of the world go back a long way and even the young engineer's favourite Meccano set or a box of Lego speak to the desire to recreate and simulate real-world objects. What could be more exciting than simulating whole worlds?

Once called god games, they have been rebranded as the metaverse.

The metaverse is little more than a playroom or Disneyland on your computer, and if you want to feel you are really there you can strap a VR headset like the Oculus Rift to your face.

Spielberg’s film 'Ready Player One' laid out the dream/nightmare of fully immersive online games and now Facebook, with its...