[neilv]

10% of the remaining advantage of Scheme today is not needing to use the Shift key to type identifiers on US keyboards. Instead, you use minus rather than underscore, and there's no camel-case, and mostly no all-caps (except for syntax transformer pattern variables, IMHO).

However, Scheme and other Lisps have the problem of parentheses being a shifted character on most US keyboards.

For Scheme, my Emacs tweaks included letting you type the square brackets (unshifted on US keyboard) to get parentheses. (Or you'd get the correctly matching closing character, if the close-square-bracket key you pressed would match an open-square-bracket.)

[dunham]

Donald Knuth has a custom keyboard layout file for macos that switches [] with () and + with =.

The file is at https://www-cs-faculty.stanford.edu/~knuth/programs/DonKeys...., linked from https://www-cs-faculty.stanford.edu/~knuth/programs.html

[ryukafalz]

One of my favorite keyboard layout tweaks is being able to tap left/right shift for open/close parens. How well it works depends on the keyboard but especially on split keyboards it can be very nice.

[chuckadams]

R6RS scheme lets you use square brackets equivalently to parentheses.

[neilv]

If you want uncomfortable pointy corners, sure.