Note how I used the phrase "real life". This means in the outdoors in the sunshine, with gravity and all that stuff.
What is the use of a graph that does not take into account the mechanics of the real world?

How is it theoretical? Theories are models that attempt to replicate real life. What is theoretical about something that knowingly neglects major forces?

This is like saying, "In theory My Nan can see clearly" But forgetting to mention that she dropped her glasses and both her eyes just fell out. Doesn't really work in reality does it?

So, in summary, what was the use of your initial post if you knew it bore no relation to the real world?