This is fascinating and everybody's response is of great interest.Please consider, Dimi, the following:1. Right click and select Cockpit View.Result: View Point (aircraft interior) is static and scenery and AI, which is just another form of scenery by the way, give the illusion of movement.2.Right click and select Tower View.Result: View Point (scenery) is static and aircraft, and AI of course, gives the illusion of movement.3. Right click and select Top Down View.Result: View Point (God, or a Russian cosmonaut, and I hope to God they are not the same) is static and both aircraft and scenery give the illusion of movement.So, what is going on? There is some confusion, it would seem, in that, in truth, this is a video game (here come the purists, sorry, I meant a sim) and nothing is really moving. It is just pixels being activated according to the code and your input. What gives the illusion of movement will depend completely on your View Point.If it were a First Person Shooter video game, then it would be simple to determine the View Point, because it is the ... First Person Shooter! Obviously. But, in a complex sim (see, I said it) like FS, View Point can vary according to the user's desire, and different elements will give the illusion of movement at different times. But, nothing is really moving. It is just code and pixels being blitted.It is interesting that Dimi's inquiring mind should wonder about this, and it is all to his credit that he should think of it. But, please notice that he, and others, credits the sim with movement (when it is just an illusion), whereas he is sitting on his chair in his house on his street in his city and country on a planet that is moving at a few million kilometers per hour, and yet he has no sensation whatsoever of moving."Awesome, dude!"Best regards.Luis

<< ..in truth, this is a video game (here come the purists, sorry, I meant a sim) >>Glad you corrected that, Luis ....When I started my meagre programming efforts, when we had just two hardware 'pages' to write to, we displayed the first page whilst updating the second, then switched them.I always assumed from the various programming books at the time (I'm talking VGA/EGA here) that there was no 'fixed' point. i.e the whole page was updated, or moved up/down/left/right/diagonal etc by one pixel 'line' at a time. Even in those days you could scroll the hardware page very quickly. (There was no 'Windows' level then - just coding the bare hardware page, giving the illusion of movement).So I have always assumed that the viewer (The flyer here) was assumed to be stationary, and the 'page' updated accordingly. I can't see both the viewer (us) and the subject (scenery) being 'moved' - that would be overkill. Far more programming power (i.e. a lower FR) would be required surely ?Now, if that new 'Teraflop' chip was available.... RegardsBill

Thank you all for your feedback!!Its quite amazing how it all comes togethter in the sim to give us this immersion factor.Thats why this hobby is so fascinating.I do "play" FPS shooters like Crysis 2,but flightsim always gives me greater satisfaction,especially with all the marvelous addons available to us.Its quite amazing really,when you think abou it,hence my original post.I can only wonder what awits us in the future.Cheers!