A long time ago I visualized mass accelerated to the speed of light(or theoretical maximum to this speed) as an upside-down parabola touching the y=0 line. Now, today I thought of the following: if you would represent a certain parabola(equation according to ^2 of the mass/energy ratio required) in 3d (not a cone) (maximum at y=0), and place the surface of a circle ∏r^2 within that '3d parabola' (horizontally) and move this circle upward towards the y=0, until ∏r^2 'within' the 3d parabola reaches y=0 ( so, ∏r^2) 'within' the 3d parabola = 0 = maximum acceleration to the point of black hole formation = 'point of black hole maximum mass' = speed of light limit ). And, ∏r^2 'within' 3d parabola moves downward so that ∏r^2 'within' 3d parabola = infinite = no mass = no acceleration (according to E=m(c)^2) Is it so that these '2 infinite limits'(infinite energy required and infinite ∏r^2) define the E? so that the above explanation is equal to M(c)^2? If so, what would the formula be for this 'system? (non simplified, that is all possible positions of 'horizontal ∏r^2 within 3d parabola' equation) I was intrigued when I read about Einsteins discovery that gravity is equal to acceleration (with equal consequences), so after some thinking I came up with the story above. Is it flawed?? as you can see, my math skills are VERY basic, but I think it should be simple to understand with some visualization.