IMO, it's not a "bad idea". Code is meant to be read, not written. If it renders the code more readable, then that's a win. But obviously, whether those symbols actually make the code more readable is debatable.
> whether those symbols actually make the code more readable is debatable.
In general, it would be rather silly to use greek letters for variable names. Yet sometimes, they tend to make numerical code much more readable when you are copying a mathematical formula verbatim.
Compare using "πθ" versus "M_PI*theta" several times on the same formula, for example.
