It is true the fundamental origin of gravity IS just a theory, just because it is proportional to mass does not mean mass is the cause of gravitational force. This is still a mystery to science. HOWEVER 9.81m/s^2 IS the acceleration of objects due to earths gravity. I personally have measured and confirmed this well known force several times via experimentation along with countless others throughout history and 9.81m/s^2 stands the test of time. Finnian is correct in both his explanations of gravity pulling water and the hiding of classified locations with digital fakes.
Here is a thought experiment: take a theoretical string that is 1000 miles long, lay it against any curved surface (including the earth) and drive along that string. how many miles does the odometer read at the end of the string?
Every curved surface if looked at close enough is a straight line.
Every flat and smooth surface if looked at close enough is a rough surface.
(I look through microscopes every day and see these facts with my own 2 eyes)
I was also a sailor in the USCG before becoming an engineer and sailed all over this globe. I have looked through binoculars and observed ships appearing and disappearing over the horizon.
could prove that there is gravity.
!. Everything is being pulled down. FACT
2.All falling objects fall at a specific acceleration dependent on it's height from sea level. FACT(was gonna say from center of earth, but.......)
There is gravity, but gravity is an effect, not a cause. No one knows the cause of gravity. Newtons laws are correct and have been used by engineers and architects for nearly 400 hundred. Skyscrapers, airplanes bridges, etc. wouldn't be possible without them.
No-one is arguing with that constant. Just what is causing it.,. We do know. it's DENSITY DIFFERENTIAL. Simple. Wake up. The observable law is correct. Agreed. It's not caused by what they say at all. Simple as that. Everyone took gravity into account before they had a name for it, and also after the lied about what it was. The cognitive dissonance is phenomenal on this topic.
Why isn't my post being displayed the way I wrote it?
Not arguing the existence of downward acceleration. You can call it whatever you want. Still does not say anything about Earth being a planet in infinite space.