First of all: I'am not a physicist or anything close to it. I jhust enjoy to think about certain thinks in a different way and to ask for a much more detailed "how".
So here is what keeps me from sleeping recently:
wood floats on water (usually)
to float on the water the water needs a way to get under the wood
both materials are "pulled down" by gravity
due to the higher density the water gets "pulled down more"
If there would be a piece of wood which has a 100% flat surface and you would place it a few centimeter deep and 100% horizontal in a 100% static water. Would it float "up" to the waters surface to float as usual or will it be blocked by the water which can't get under the wood?