what is the normal temp supposed to be
There is no "supposed to be." Supposed to be according to whom?
Maybe what you mean is "what is the temperature compared to what it would have been without humans?" If so, the answer is clear if not precise: warmer.
There are no good biometric systems because keys can't be revoked.
That's not a flaw, it's a feature. And it's not a key, it's an ID.
[...] an engine that does not serve a competitive purpose anymore
Trident literally makes Microsoft NO money [...]
Both false.
Internet explorer does many things in the Windows/Office universe that no other browser does. Those things make Microsoft money by driving sales of Windows and Office and many other pieces of the Microsoft ecosystem (e.g. Sharepoint, SQL Server, etc.).
If all your desktops are Windows with Office and IE, you can develop intranet applications that use Office and can make direct calls to Win32. Yes this totally ties your application to Windows and Office, but many businesses are fine with that, even like it that way.
Active-X may be a security disaster on the internet, but in a locked down corporate intranet environment, you can easily do powerful things, like have a web page that embeds a live excel spreadsheet (the real excel, not a bloated, slow, feature-deprived javascript 'spreadsheet') displaying editable data from a database or web service. Click a link to open in excel, still editable, still connected to the server. You can do that kind of thing with very very little code, but only if you can assume you have Windows and Office on the client, and it only works in IE.
That is one of the competitive purposes of IE, and one of the ways they make money from it.
If it works in Chrome on Windows, it will work on Safari on the iPhone, without needing to test if it actually works on the iPhone.
What color is the sky in your world?
Getting the job done is no excuse for not following the rules. Corollary: Following the rules will not get the job done.