The uncomonality of common sense

I do not propose to be super-intelligent. I do not propose to be anything out of the ordinary, as ordinary people go --- but where did common sense go? Am I the only one who sees certain things as common sense? Is it just that others overthink things? Or do they really not have the mental capacity with which to solve these simple business problems? Balancing the daily books for a business is relatively simple, in the big scheme of things. It's not like I'm asking them to balance the budget of the country in the week I am on vacation. I am simply asking that my management staff account for the money we have taken into our business from sales on a day-to-day basis. This should not be difficult. However, they seem to have "lost" an amount of money that I do not find acceptable. No amount of money would be acceptable, granted, but, especially with this being a slower time of year, we cannot afford to miscalculate as they have done over the past weekend. It amazes me. I wish I could say more, but I am truly losing faith in the people I have given charge of my business in my absence, and I am at a loss for words. I hope to have words, and be able to convey them in a somewhat calm tone, upon my return to work at the end of this week.