[pavel_lishin]

Sorry, my point wasn't to call you out - but it's unequivocally faster to call out "Hey Dingbat, what's 7 + 17" than it is to pull out a device, unless that device is already unlocked and in your hand.

(Also, howdy fellow second-world country person! Pretty nice to meet someone who knows the term :P)

[spronkey]

That's quite untrue for more complex examples of 7 + 17.

"Hey Dingbat, what's 10 percent of 50 times 33 times 125. Oh sorry, 10 percent of open parentheses 50 times 33 times 125 close parentheses".

Even just talking it is substantially slower than typing the number into a calculator. App, desktop, or phone.

[ribchinski]

Especially when there are parenthesis. And when you are in the kitchen, well... it is loud. Accents mess the voice recognition + the sound of the kitchen.