On the contrary, I've provided links that show that scientists do know about the processes described in your video, and they understand how these processes work in places like the Grand Canyon. I don't suppose you took up my offer to Google "sediment transgression fossil dating" either, which would provide numerous links showing you how scientists date transgression layers in sediment. You presumably also read my comment that upper and lower age limits can be found for sedimentary layers by radiometric dating of igneous deposits immediately above and below them? If you choose to ignore all this and claim that because you didn't learn about transgressions in school, it must mean that the scientific world is also ignorant of them or is lying, then I can't help you there.

I also said that not all sedimentary layers take millions of years to form, even though the video claims that this is what scientists believe. Actually, I'm not aware of any individual layers that take millions of years to form; within a deposit that was this old, you'd be able to find more layers within. And it's obvious that some layers form very quickly, we can see that going on today.

I also explained briefly why a canyon cut into soft volcanic ash is not the same as the Grand Canyon, cut into hard rock.

Then I asked why, since these errors were presented in the first two parts of the video, anyone should watch the second two parts. Giving the link over and over isn't going to improve its veracity.