If Michio Kaku is correct, we may have people from the future wondering among us.
Here’s his list of most likely science fiction concepts that could happen in the next 100 years.
Category 1, as he dubs it, includes things that may become true within the next century, if not the next few decades: teleportation (already possible, but only among subatomic particles); telepathy (thanks to brain implants); invisibility (already being researched using light-bending ‘metamaterials’); laser guns (existing, but hugely power-hungry); force fields; and the discovery of extraterrestrial life.
Read the next two categories and more.