In an article about the brain (a wonderful article) Carl Zimmer has this quote.
The brain is, in the words of neuroscientist Floyd Bloom, “the most complex structure that exists in the universe.”
Now, I understand the awe we feel looking at the complexity and ingenuity of our brain, but the most complex structure in the universe?! Biological systems tend to accumulate entropy to create complex systems, but there are many other phenomenon in the universe that has much more entropy. Think about the nuclear fusion in the center of starts, and how about the super massive black hole! Now think about possibilities of life (as self replicating, self regulating systems capable of building complexity) in the rest of the universe. Some of it might have had billions of years to evolve. May be there are sentient networks that cover whole solar systems.
How do you even conceive even a thought experiment to verify that statement?
I have to disclose that I did not read Bloom directly and doesn’t know the larger context from where it is taken.
Such statements, like any other unverifiable statements, should be avoided when someone writes about science.