Your assumptions are bad but your point is still correct
I'd agree that some enterprising 15 y.o.'s might be able to come up with both the cash and a way to connect to social media. There are several other ways you didn't mention like getting a hold of an old laptop and just doing it from a browser, using friends' computers, etc... However, the problem with all those things is that they require the time and space to spend using social media.
Part of the problem here is the enormous amount of time, focus, and energy kids dump into these environments. They don't do that in a vacuum. If you are actually parenting your kid, you're going to notice rather quickly. If you fail to intervene then the failure is on you. You should definitely be going through your kids belongings and tracking their activities as closely as needed to insure they aren't putting in the time. After all, it's not like they are going to use social media for 15 minutes at their buddies' house and ruin themselves. The damage is the result of years of neglect and lack of oversight/parenting.
I was going to reply seriously
... but you had nothing to say that would fish you out of this hole you're digging? That checks out.
all I can say is that you sound like someone who shouldn't have any kids
Excellent. Well, allow me to retort. I'd say you're a weak willed bitch who cannot stand up to an obnoxious, whiny,15 year old bully you raised. Don't pawn your lack of fortitude off as some kind of universal constant of parenting nobody understands. Others seem to have no problem at all with saying "NO". So, you really have no excuse, do you?
If you think parents can avoid their 15 y.o. from doing much of anything that they're really set on doing, you've no idea of parenting.
Ostensibly your teenager still lives at home. They don't have the cash to buy their own phone. So, the parents bought them the phone. They also pay for the cellular carrier. I personally know kids that get grounded from their phones and have them taken away by the parents for months at a time. There is no end to parental controls built right into the OS! I find your assertion pathetic and ridiculous. If you cannot control your fucking children then stop having them or at least stop whining that you have no control.
Classic BIOS didn't do things after boot once the OS loaded. It just sat there in case anyone wanted to use it.
It does just sit there, but it most certainly can do things after the OS is loaded, too (very much depends on what OS we are talking about). BIOS stays in ROM/shadow RAM. The BIOS code is in ROM (typically mapped at the top of the 1MB address space, like F0000h–FFFFFh) and often shadowed into RAM for faster access. The Interrupt Vector Table (IVT) at the bottom of memory (00000h–003FFh) points to BIOS handlers. These don't get wiped out when the OS boots. Furthermore, we have things like INT 13h, disk operations (read/write sectors, status, etc.). This includes the original CHS functions and INT 13h extensions (EDD for LBA, larger disks). These were commonly used by bootloaders, DOS, real-mode programs, and even some protected-mode code via switches or VM86 mode.Other examples include INT 10h (video), INT 16h (keyboard), etc. All of these were/are available after booting and many OSes use them.
Logic doesn't apply to the real world. -- Marvin Minsky