Evolution is a fact. It is the best explanation of what is known from observations. It's a theory as powerful as the theory of gravity.
Donald JohansonRead
When I realized, in 1978, that Lucy did represent a new species of human ancestor, and that I had an opportunity to name this new species, I realized this was a revolutionary step in understanding human origins.
Interpretation
This quote reflects a pivotal moment in the understanding of human evolution through the discovery of a new species.
Donald Johanson expresses the profound realization he experienced when he identified Lucy as a new species of human ancestor. This discovery was not only groundbreaking in the field of paleoanthropology, but it also contributed significantly to the broader understanding of human origins, highlighting the importance of scientific inquiry and the impact of such revelations on our knowledge of humanity's evolutionary past.
In practice
In a lecture about human evolution, I would refer to this quote to emphasize the importance of breakthroughs in science.
Evolution is a fact. It is the best explanation of what is known from observations. It's a theory as powerful as the theory of gravity.
Where we are going as a species is a big question. Human evolution certainly hasn't stopped. Every time individuals produce a new zygote, there's a reshuffling and recombination of genes. And we don't know where all of that is going to take us.
And what I wanted to do was, I wanted to explore problems and areas where we didn't have answers. In fact, where we didn't even know the right questions to ask.
I think that many of my ideas are correct, but I'll bet you, before my death other discoveries will be made that will prompt me to alter various ideas I have about human evolution.
Science is composed of laws which were originally based on a small, carefully selected set of observations, often not very accurately measured originally; but the laws have later been found to apply over much wider ranges of observations and much more accurately than the original data justified.
Odd arrangements and funny solutions are the proof of evolution - paths that a sensible God would never tread but that a natural process, constrained by history, follows perforce.
The true laboratory is the mind, where behind illusions we uncover the laws of truth.
I've always been very one-sided about science, and when I was younger, I concentrated almost all my effort on it.
The brain of man, like that of all animals is double, being parted down its centre by a thin membrane. For this reason pain is not always felt in the same part of the head, but sometimes on one side, sometimes on the other, and occasionally all over.
There does not exist a category of science to which one can give the name applied science. There are sciences and the applications of science, bound together as the fruit of the tree which bears it.
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