Carbon dating if world was surrounded by water

We have to assume that scientists know all about the variables involved, that some scientists are wrong in supposing that there was variation in the intensity of cosmic-ray formation and that others were wrong in supposing that there were fluctuations in the original C-14 content.Carbon dating assumes that the rate of C-14 decay has been a constant and has always been exactly the same rate that we find it to be today.

Funny thing is that they tested an ancient structure at Durrington Walls in England, that they knew was 1500 years old, but the Carbon dating “proved” that it was actually 2500 years old!

I stress that this "proof" was actually provably wrong.

In Thermopolis, Wyoming there is a huge formation of stalactite that developed over 100 years where a 1 inch water pipe was left running for 100 years. There are many places where man made tunnels are forming stalactites and stalagmites. The Grand Canyon and other canyons supposedly took millions of years to be carved by the rivers running through them.

Mud from the Mississippi river is dumped into the Gulf of Mexico at the rate of 80,000 tons per hour.

There are stalactites and stalagmites in caves and other rock formations that scientists claim took millions of years to develop.