Do you live in an alternate reality? That's a hard question to answer, because often people that do - don't know it. This is, however, a question worth asking. There are growing numbers of sophisticated social engineering campaigns that are being directed at our brains by all kinds of different organizations. These aren't your grandparents' marketing campaigns, these are highly targeted to influence your way of thinking about reality.
In addition to social engineering campaigns, there are now technologies being developed for the next generation of the internet, web 3.0, that can deliver intense and immersive 3D experiences that will potentially offer up a wide range of different realities for us to consume - some nefarious and some innocent. We must all educate ourselves on these and be aware. The more senses that are exposed to nefarious influencers, the more power they have to alter our reality and belief systems.