This has to do with the fact that the game only uses the full 64 bit seed when deciding how biomes should be placed, otherwise it uses Java's built-in random number generator, which only uses 48 bits. Biomes do influence the amplitude and zero level of noise variations so unless they happen to match they won't be identical but still similar (the examples I used in the link are from 1.6.4 since the smaller number of biomes makes matches more likely but this also happen in newer versions and should occur in other editions; for example, C++ has a RNG which is the same as Java's Random).
I do not see any similarities between the screenshots given though, and to randomly stumble across two "same lower 48 bits" seeds" is a near-impossibility (even a 48 bit value can produce more than 281 trillion different seeds). In fact, I wouldn't be surprised if no two people have ever created worlds with the same randomly generated 48 or 64 bit seed values.
That there might be a rough similarity to the layout of those particular spots. It is not impossible given the amount of landscape that is being generated all the time in Minecraft. But to infer they are the same, except for added blocks or features, is not true.
It is likely similar only the snowy landscape , which becomes desert that changes the appearance,
mineshaft abandoned mine, river are located in the same x y z ?
Mesa Plateau and Ice Spikes Village map are similar anybody who notice this?
Except for the snowy areas, which are absent in the Mesa Plateau map, the Ice Spikes Village map
to me seemed alike.
It is possible for two different seeds to have the same terrain, down to the exact same blocks and features where the biome matches:
http://www.minecraftforum.net/forums/minecraft-discussion/seeds/2229720-can-two-different-seeds-produce-identical-worlds
This has to do with the fact that the game only uses the full 64 bit seed when deciding how biomes should be placed, otherwise it uses Java's built-in random number generator, which only uses 48 bits. Biomes do influence the amplitude and zero level of noise variations so unless they happen to match they won't be identical but still similar (the examples I used in the link are from 1.6.4 since the smaller number of biomes makes matches more likely but this also happen in newer versions and should occur in other editions; for example, C++ has a RNG which is the same as Java's Random).
I do not see any similarities between the screenshots given though, and to randomly stumble across two "same lower 48 bits" seeds" is a near-impossibility (even a 48 bit value can produce more than 281 trillion different seeds). In fact, I wouldn't be surprised if no two people have ever created worlds with the same randomly generated 48 or 64 bit seed values.
TheMasterCaver's First World - possibly the most caved-out world in Minecraft history - includes world download.
TheMasterCaver's World - my own version of Minecraft largely based on my views of how the game should have evolved since 1.6.4.
Why do I still play in 1.6.4?
It is likely similar only the snowy landscape , which becomes desert that changes the appearance,
mineshaft abandoned mine, river are located in the same x y z ?