Yes Tom I saw that, just did not have time to respond appropriately.

Since you conjured the 'parameters' to the problem, I will conjure up the solution.
To solve the problem we will need to know the 'exact'* quantity of water leaving the lake at all times. These measurements must be made before the 'extra' drops are added. If we continue to monitor the 'exact' water quantity and notice that there is an 'increase' in the volume of water flowing out of the lake, then we can assume that the 'increased amount of water' originated from some where, it may have been from my 'eye dropper' or it may have been a rain drop. If the increase was from my 'eye dropper' then there is no danger because I will get tired of playing with the water and will go home, but if the increase is from a rain drop then it should be INVESTIGATED, because if there is the possibility of LOTS of little drops coming down at regular intervals, then it COULD cause an uncontrollable flood.

As for the other problem, the sailor may not be in danger, but with good measuring devices, I bet we could observe the tilt of the ship.

SO THERE ##%%$$$#$#

x·act (îg-zàkt¹) adjective
1. Strictly and completely in accord with fact; not deviating from truth or reality: an exact account; an exact replica; your exact words.
2. Characterized by accurate measurements or inferences with small margins of error; not approximate: an exact figure; an exact science.
3. Characterized by strict adherence to standards or rules: an exact speaker.1