Simulation Theory is Elon Musk Right?

Is this a simulation? Do we live in a simulation?

I have long admired Elon Musk here, although this was some time ago, do you think he was onto something? Doctor Who has used the idea in the episode Extremis. Are we all in some GTA 5 Simulation? Are you just an NPC going about your daily life with no actual choices despite thinking everything you do is a choice? In reality its just coded to be that way? In any case enjoy this moment it is wonderful!

Have Fun!