Dave's ESL Cafe's Student Discussion Forums

[missdaredevil]

He said mystery shoppers should never reveal their mission. That's one *cardinal sin*.

. important: fundamentally important

Thanks

[asterix]

Yes.

[missdaredevil]

What else can be a *cardinal sin* besides revealing your identity as a mystery shopper?


Thanks

[bud]

There are no standard cardinal sins when used in a non-religious context. Anything that violates a fundamental principle of some "issue" could be called a cardinal sin. It is a cardinal sin for a vegan (someone who will eat only food that comes from plants) to drink milk.