HuffPo astronomer blogger explains why we live in a multiverse
|April 25, 2014||Posted by News under Multiverse, News|
One possibility for this Big Bang theory is that m and b are like the value for pi. These numbers are completely and self-consistently defined to be the unique values that we see. There is no further scientific discussion because m and b are logically derived within this theory from quantities we already know about. We call this a closed system, and it leads to the idea that there can be only one logically consistent universe, and we are living inside of it.
A second possibility is that our universe is part of a larger system called the multiverse in which all possible values for m and b can occur and lead to many — in fact, an infinite number of — separate, logically consistent universes. Most of those values lead to universes in which life does not exist, while others have randomly selected values for m and b that are within the very narrow range to allow life to eventually emerge. We observe the weird values for m and b because we are here to experience them. This is called the anthropic cosmological principle, and it represents the dilemma facing physicists today.
You’ll never guess which conclusion he thinks is “logically required.”
To understand how evidence-free speculation about a multiverse came to be considered “science,” see The Science Fictions series at your fingertips (cosmology).