Sure you might as well ask action heroes to stop walking away from explosions.

Easily solved. Just don't watch Hallmark Movies

Most of them didn't. But they also didn't eat a lot of refined sugars. It's genuinely kinda shocking how big a difference a low sugar diet makes to your dental health. Of course they also didn't live as long so their adult teeth only really needed to get them through a couple of decades

No grass in the middle? Clearly that's a main road

Or worse, you'll be accused of making the character prettier, skinnier or bustier because your not happy with the real thing. My characters I usually make as old and hairy as I can manage. Octogenarian Afro-Viking is my archetype

When you type 4 in your keyboard, the button you pushed presses on one of many physical switches, which each produces a unique number (in binary) called a scan code which tells your computer which of the many keys you pressed. At point the computer knows which button you pressed, but not what that button represents (you may have seen keyboards for different languages have different physical layouts)

There is then, in the operating system, there is a table which knows the layout and can convert those scan codes into the appropriate binary representation of the number, letter or symbol that the key you pressed represents

Imagine an old house, with timber frame windows, no locks just casement stays. Night latch, single cylinder door locks. Single bolted basement hatch.

Most PCs are that house, which someone has tried to make secure by adding more locks to the places they know are weakly secured.

Phones are a modern house with triple glazed PVC multi-point locking windows and steel frame multi rod security doors.

When you take something big and complicated that was never designed to deal with modern threats and you try to secure it, you can make it pretty good, but there is always the risk of gaps. When you design something to be secure from the start it's easier to ensure no gaps... But of course neither is perfectly secure.