If they fool people, it has a negative impact on the business. If they don't fool people, it was a waste of time and resources... which has a negative impact on

If they fool people, it has a negative impact on the business. If they don't fool people, it was a waste of time and resources... which has a negative impact on the business. We live in a world with timezones, so that people end up hitting the pranks early or late. If you want to boost morale, engineer pranks for employees. You get 100% of the "benefits," and 0% of the customer being either fooled or not.