HN user
If we ever get to 50 or 100 character passwords i don't think passwords will be the norm anymore. Perhaps facial recognition, but i think a better option is on the horizon.
We Should really just build rails
The beauty of cars vs rails is that cars can go more than just a set in stone angle or path defined by a rail. Cars can go in and out of parking lots and dirt roads. Rails would be more automated, yes, but not as versatile.
I liked Sams Teach Yourself C++ in One Hour A Day, it goes over C++14 and C++17 and it was really informative.