Third, a back-of-the-envelope calculation suggests that the present study should be little affected by these timing issues. |
Let's try back-of-the-envelope calculations. |
It's back-of-the-envelope stuff with lots of assumptions. |
A back-of-the-envelope calculation suggests that it can. |
In some cases, a back-of-the-envelope estimate is sufficient to make a pass-fail determination. |
A lot of this is back-of-the-envelope stuff. |