Why are no two snowflakes alike?
111164
That is an assumption which cannot be proven. No one yet disproved it by showing 2 of the same.\n\nIf you consider the molecular scale, there's pretty much never 2 of the same of anything.  So I (as most people seem to) am referring to 2 of the exact same pattern.  There are infinitely many of possibilities, but there have been an awful lot of snowflakes to assume none have been the same.
369640
As many snowflakes as there have been, they still add up to a finite number. There is an infinite amount of possible questions.
751100
Merry Christmas or Happy Holidays?  Why do people take offence to one or the other?  Can't we all just be more tolerant and learn to respect our differences?
848041
There are nearly an infinite number of possible shapes, all based on a six sided crystal.\n\nIt is NOT necessarily true that no two are alike.  No one can say for certain since there is no way to study a nearly infinite number of snowflakes to make a comparison.\n\nBut consider this possibility, that there are two snowflakes with the EXACT same pattern and layout.  One is an inch in diameter, and the other is 3/4 inch.  We can say that thes are not alike since they are of different sizes.  We can assume that it is possible that the exact same pattern may appear in another flake that is one inch in diameter, and another that is 1/4 inch, and any size in between those I've mentioned.  \n\nWhat if two appeared that were the same size within a thousandth of an inch?  We can't say that the are exactly the same.  But what if two appeared, but the difference in size were too small to measure?  ARE they the same?\n\nEven if there were a LOT of money to spend on such a research project, the research could only go so far.  If the study were done in Colorado, for instance, there would be no way to know if a duplicate appeared outside of Moscow, or New York, or Lake Tahoe, or even right outside the researcher's door.\n\nJust because there are NEARLY infinite possibilies of patterns, the fact that nature limits the patterns to six sides means that there is a potential limit to the number of patterns.  And don't forget, nature is not TRYING to prevent duplication.  The same kinds of physical forces are in place in the making of EVERY single snowflake, all over the world.\n\nThere are nearly an infinite number of ways a human being can appear, but, for the most part, we all fall into the usual pattern of one head, two arms and two legs.  In between, there is a great variety in skin color, size, shape of head, hand, belly and bottom.\n\nSame for snowflakes
788046
Well, yes, but it is impossible to prove.\n\nNo one has ever examined ALL snowflakes.\n\nHowever snowflakes tend to all have a hexagonal shape in most snow.\n\nIn extremely cold weather at the south pole, other crystalline forms of ice are possible but they are very rare.
83771
maybe coz u think they look the same
147808
a- multiple personalities (true ones, not fakers) are a one in a million chance.\nb- since we dont understand the nature of a multiple (are they seperate spirits?  we know they have no knowledge of each other, and that even brain waves are different, but are they even the same person? [the body does not make the man, but the spirit]) this question cannot be answered by the human mind
1117871
Yes.\nSince a typical small snow crystal might contain 1018 water molecules, we see that about 1015 of these molecules will be different from the rest.  These unusual molecules will be randomly scattered throughout the snow crystal, giving it a unique design.  The probability that two snow crystals would have exactly the same layout of these molecules is very, very, very small.  Even with 1024 crystals per year, the odds of it happening within the lifetime of the Universe is indistinguishable from zero.
476667
Why not both in the same girl?
35621
The phrase "twice as cold", has no meaning.\nYou could argue that one temperature is twice as warm as another, if they were measured from absolute zero.
778638
leaves,flowers,every animal on the planet..trees, just about everything on the planet, since everything has two sides that look the same but opposite, everything is basically the same as snowflakes...
17266
Neither.  It is more of an oval thanks to the strong magnetic pull at the *top* and *bottom* (North and South Poles) of the earth which also have to do with gravity.  Were these features any different, the fowl of the air would not know where to go in the winter.
1029226
Because one of them follows the general guidelines of scientific theory and one of them doesn't.  One of them can be backed up by thousands of documents of supporting evidence, the other ends with "faith" as the answer.  Trying to equate the two is silly.
89948
The black and white are different colors...the other two come from different countries. You have me on that pesky "why" question though!!!
924645
The molecular structure defines the identical angles of the snowflake, and the fact that all parts usually form simultaneously in a cloud with nothing restricting the crystal's growth makes it likely that all pieces form at the same rate and are nearly identical in size -- so the flakes are usually symmetrical.
674559
no they are the same with 2 different names
154556
No, they are different animals.