I think the argument is that if you write a 1 with a line at the bottom it is easy to confuse it with a sloppily written 7, whose bar moved down a bit.
Which invalidates the argument of the user above. (If not inverse it - a lot more numbers in life start with a 1 than with a 7)
Distinguishes it better from 1. 1 and 7 can look pretty similar
I think the argument is that if you write a 1 with a line at the bottom it is easy to confuse it with a sloppily written 7, whose bar moved down a bit.
Which invalidates the argument of the user above. (If not inverse it - a lot more numbers in life start with a 1 than with a 7)
1 with a bar at the bottom? I honestly have never seen that in handwritten text