Sometimes writing braces and omitting them produces the same result:
\tilde{\psi} \mathrm{e}^{\mathrm{i} \pi}vs
\tilde \psi \mathrm e^{\mathrm i \pi}Or (taken from Werner's comment below)
\frac{1}{2} vs \frac12If that's the case, how bad for the quality of my code is omitting them? Of course, if one compiles a pair of formulas, there is no difference. But, since I ignore how TeX works, my point is: if one writes long codes with these habits,
- doesn't TeX go somehow crazy because I'm not writing as it expects?
- For instance, does it have any effect on how fast are long documents compiled? Any reason to keep them?
