For absolute sure there is light and shadows, but saying those are scientifically measured to be scientifically correct to current known astronomical data is farcical.
As for the 'rebuttal' he gave a one line reply, if he gave further after I blocked him, then so be it. I find him to be far too fanatical in his appraisal of Elite. It is a fantastic title no doubt, but barely worth the scientific accreditation he assigns to it. In my opinion.
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Anyways, o7, enjoy which ever camp you play in. I play in both and X4, but mostly XPlane presently.
I think its a matter of context. When compared with other mainstream space games (X-series, NMS, SC, Rebel Galaxy) the galaxy of ED is 'scientific' in that the scale and time is 1:1, planets rotate/orbit, system composition can become relatively complex, and the flight model is a 'simulation' in that docking isn't a cutscene or automated, crashing is actually possible, it has 2nd order controls and so on. But that is dependent on what you compare it with. If ED was a 'realistic' depiction of a future in which humans explore the galaxy, there wouldn't be any humans in the spaceships themselves, and if it was a 'simulation' in a true sense of the word 99.9% of us would be unable to get it from the docks and prepping for launch would take hours.
As for content, I see ED as somewhere between Space Engine and NMS. One has fantastic space generation and pretty much no gameplay, one has atrocious space generation from a physics point of view but tons of stuff to do, and ED sits somewhere in the middle. To each his own and all that: I consider all three to be respectable products worthy of one's time.
Funny you mention X-plane, I just got IL-2 Sturmovik: Battle of Stalingrad. Puts things into perspective; ED is a space simulator compared with NMS, but an absolute arcade game compared with a modern flight sim. First hour mostly consisted of crashing and reading tutorials with sentences where none of the verbs or nouns were familiar to me.