Probably about as much use as these NVQ'S on fire extinguisher spotting that folk are being encouraged to do.
I've helped a few people on a variety of those courses and they and I can tell you the different types of fire extinguishers there are, but none of us seemed to learn anything useful, (that's not saying fire extinguishers aren't useful), about their particular jobs!
Besides asking if someone wants, "Potatoes, canola oil, hydrogenated soybean oil, safflower oil, natural flavour (vegetable source),
dextrose, sodium acid pyrophosphate (maintain colour), citric acid (preservative), dimethylpolysiloxane (antifoaming
agent) and cooked in vegetable oil (Canola oil, corn oil, soybean oil, hydrogenated soybean oil with THBQ, citric
acid and dimethypolysiloxane)", with that?" Instead of fries,
just because you can isn't clever.