The 'shock' that the planet is Earth
A point to consider.....
I watched the original movie with Charleton Heston and then the 2001 version over the weekend - one on TV the other on a borrowed DVD. Leaving aside the very confusing ending to the second film - how can he go back in time and discover an Abraham Lincoln-like statue honouring an ape who he had just put into a trap 2000 years in the future? - the thing that amused me in both films was the look of surprise on the faces of both Heston (especially) and Wahlberg when they discover that this strange planet that they had landed on was Earth.
When you consider the incredibly wide range of physical conditions that exist on Earth, let alone the Solar System, the range that must exist in the Universe is beyond my imagination. So if I, as an astronaut well aware of the wide diversity of conditions that exist, landed on a planet with EXACTLY THE SAME atmosphere, gravity, distance to the nearest star (as shown by the size of the 'Sun' in the sky), ambient temperature and vegetation as the Earth I would do a rough estimation of the chances of there being TWO planets in the Universe with exactly the same conditions. I would conclude from my calculations that this chance was so low that the most logical explanation was that I had arrived back on Earth - albeit an Earth that I did not recognise, for some reason.
However, I think that the main clinching argument that would lead me to realise that I was back on Earth instead of on an alternative planet would be the presence of individuals (albeit apes) speaking English with American accents. The likelihood of English evolving on a distance planet is somewhat low!!!
So, taking these points into account - it would have been much more of a shock if the planet had NOT turned out to be Earth!
Karen
Happiness isn't happiness without a violin-playing goat.