I agree. .NET is the opposite of Go. Calls to System.Random use Xoshiro128++ under the hood (as of .NET 6 I believe). On the other hand, calls to RandomNumberGenerator.GetBytes() are cryptographically secure, using the Windows kernel cryptographic provider on Windows and /dev/urandom (chacha20) on Linux and arc4random_buf() on MacOS (which also uses chacha20 under the hood).

I ported around 20 RNGs to C# (all non-cs), and there are tons of uses for non-cryptographic RNGs, so I'm a little torn. I guess in modern development most people who need an RNG need it for crypto purposes (I would guess salts, keys and nonces mostly), but I'd hate to see all the Xoshiros, Mersenne Twisters, PCGs, and MWCs, etc. go the way of the dodo simply because they are not deemed fit for crypto purposes. Games, simulations, non-cryptographic hashes all need deterministic and high performance RNGs, and don't need all of the cryptographic guarantees.

To top it off, there is no standard definition of what makes an RNG cryptographically secure, so it's a slightly loaded question anyway. Everything I've read says an algo needs the following properties: forward secrecy (unable to guess future outputs given the current state), backward secrecy (if I know current outputs, I shouldn't be able to recover previous internal state or previous outputs), and the output must be indistinguishable from true random bits, even with a chosen-input attack. This is where I politely defer to the expert mathematicians and cryptographers, because I'm not equipped to perform such an analysis.

I can understand why things have developed this way though- people have needed random numbers far longer than they've needed cryptographically secure random numbers, so the default is the non-cryptographically secure variant. A language created tomorrow would likely follow in Go's footsteps and default to the cryptographically secure.

LINQ? Just throwing it out there; obviously not everybody can or wants to run a C#/.NET stack, but entity framework (core) is about as close as you can get to the perl and regex integration. I think Ruby on Rails gets there too, but I'm not a RoR guy, so I can't comment.

This is disappointing. 4o has been performing great for me, and now I see I only have access to the 5-level models. Already it's not as good. More verbose with technical wording, but it adds very little to what I'm using GPT for.

I hear this a lot, and I do seem to remember back when I first got Windows 11 I might have seen something stupid like Candy Crush, but I'll be honest, I literally never see ads anywhere in the OS. Truth be told I hardly ever use the start menu since they ruined it, but this complaint about ads everywhere make it sound like a typical webpage. I just don't see it. Maybe because I'm on Win11 Pro?

Nice job. Impressive.