Yes.
'Yes' and 'No' are the most basic particles known as contributuons.

Contributuons are not entirely stable. They are sometimes known to decay into mehons, particularly nowadays when enthusiasm is so often considered passé.

We must all don HAZMAT suits immediately, as prolonged exposure to contributuons can cause long term healf effects.

(FGZS) Er, no "h" in healf, BTW. Talking of which, why does anyone working outside seem to have to wear a high-vis jacket? Will it be compulsory for everyone? Should I wear one as a pedestrian? At a recent football match it took six big blokes and a woman, all with this ludicrous garb, to carry an injured footballer off the pitch on a stretcher. You could almost feel the self-importance oozing from the telly screen. After all, this was football, a Very Serious Matter. Come on, you Blues! (whoops).

A high-vis jacket makes a very effective Cloak of Invisibility (I am told) if you want to explore somewhere outside that you're not supposed to be.