It’s a buzz word.
Web 1.0 is just websites. They envisioned everyone had their own web site to blog on. Geocities, ISP hosting, web rings, link aggregators, and simple human curated search engines. That kind of thing.
Web 2.0 basically meant APIs. You could stitch a weather API with a map API and make a weather map app. This kind of came true, but it wasn’t as free and open as people hoped for.
Web 3.0 is supposed the intersection of the web and distributed apps. Think games on the block chain like crypto kitties. It’s mostly been a flop since blockchain based decentralization is slow, expensive, and difficult for users. That being said there are successful use cases like online wallet management and distributed exchanges (defi).
I have a blue light filter on my glasses. I opted in because I sometimes use screens close to bed time for work.
I’m not going to tell you they work better then a placebo, but they work as good as one, and that’s all I need.
They are 100% yellow tinted. Anyone who tells you they don’t block blue light is a liar.