

Yeah, from what I remember of what Web 2.0 was, it was services that could be interactive in the browser window, without loading a whole new page each time the user submitted information through HTTP POST. “Ajax” was a hot buzzword among web/tech companies.
Flickr was mind blowing in that you could edit photo captions and titles without navigating away from the page. Gmail could refresh the inbox without reloading the sidebar. Google maps was impressive in that you could drag the map around and zoom within the window, while it fetched the graphical elements necessary on demand.
Or maybe web 2.0 included the ability to implement states in the stateless HTTP protocol. You could log into a page and it would only show you the new/unread items for you personally, rather than showing literally every visitor the exact same thing for the exact same URL.
Social networking became possible with Web 2.0 technologies, but I wouldn’t define Web 2.0 as inherently social. User interactions with a service was the core, and whether the service connected user to user through that service’s design was kinda beside the point.
Wait what are the Bayesian priors? Are we assuming that the baseline is 50% true and 50% false? And what is its error rate in false positives versus false negatives? Because all these matter for determining after the fact how much probability to assign the test being right or wrong.
Put another way, imagine a stupid device that just says “true” literally every time. If I hook that device up to a person who never lies, then that machine is 100% accurate! If I hook that same device to a person who only lies 5% of the time, it’s still 95% accurate.
So what do you mean by 48% accurate? That’s not enough information to do anything with.