Types loudly state what you accept, and what you return, and possibly enforces it.
The real world equivalent is giving plugs specific shapes, so that you don't plug your headphones into a 240V wall socket.
In a large enough team, this is essential to prevent incorrect data from being passed around, and breaking further down the line after causing a lot of damage.
Types do make sense to me, but they didn't always. You're certainly welcome in my world. You're also welcome to reach out if you want to gab and learn a little about how learning static types has improved my engineering life and skills. Easy to find contact from my profile.
