Don’t even consider thinking.
It would appear that independent thought has been abolished at my local supermarket. I’ve just popped down the town to buy a couple of bits and bobs. Total came to £3.54. Not having the exact change I gave the assistant a fiver then said “would you like the odd 4 pence?” “Sorry can’t do that, I’ve already rung it in.” So, staff have been ordered to avoid doing mental arithmetic have they? What earthly difference would it make if she just took the odd 4 pence and gave me £1.50 in change? The till would still add up. But no, she’s rung up £5.00 so the change has to be £1.46. Sod the extra coins wearing a hole in my pocket.
The machine is in charge. Deviate from the ‘amount displayed‘ at your peril.
I wonder if Mr Chalk is allowed to teach independent thinking?