Damian, that's how scientific theories work.
Scientists are not even saying the gravitation theory has been proved without a doubt. However, using all the evidence we have for it we can say with very high likelihood that the theory stands (which even that is more complex than you might think. you can't just drop an apple from a tree and say that's it you've proven it).
So people like you and myself do not even have the understanding to disprove Gravitation, something you take for granted. Do you really think people who do not understand biology or the basics of physics can then disprove another theory which is just under as much scrutiny (if not more)?
Scientists are not even saying the gravitation theory has been proved without a doubt. However, using all the evidence we have for it we can say with very high likelihood that the theory stands (which even that is more complex than you might think. you can't just drop an apple from a tree and say that's it you've proven it).
Gravitation, or gravity, is a natural phenomenon by which all physical bodies attract each other. It is most commonly recognized and experienced as the agent that gives weight to physical objects, and causes physical objects to fall toward the ground when dropped from a height.
It is hypothesized that the gravitational force is mediated by a massless spin-2 particle called the graviton. Gravity is one of the four fundamental forces of nature, along with electromagnetism, and the nuclear strong force and weak force. Colloquially, gravitation is a force of attraction that acts between and on all physical objects with matter (mass) or energy. In modern physics, gravitation is most accurately described by the general theory of relativity proposed by Einstein, which asserts that the phenomenon of gravitation is a consequence of the curvature of spacetime.
So people like you and myself do not even have the understanding to disprove Gravitation, something you take for granted. Do you really think people who do not understand biology or the basics of physics can then disprove another theory which is just under as much scrutiny (if not more)?