0_Apprentice
7 is my favourite lucky number!
1_Wizard
Really, well you will find it cool that various Hindus wrote 7 more or less in one stroke as a curve that looks like an uppercase J vertically inverted.
0_Apprentice
Really? What other cultures have history with the letter?
1_Wizard
Well, the western Ghubar Arabs' main contribution was to make the longer line diagonal rather than straight, though they showed some tendencies to making the character more rectilinear.