Comment Re:Wait, what? (Score 5, Informative) 217
"All current life was set in place nearly three billion years ago". Absolutely not - your view of the history of biology is very warped. Study more biology itself to realize what 'current life' actually looks like. Some important points:
1.7~2 Billion years ago: probable endosymbiosis of prokaryote into eurkaryotic cells, forming mitochonria. Much later than the 3 billion years you suggest, and an absolutely vital stage in the evolution of multicellular life. In fact, it is suggested that the emergence of mitrochondria is why we are here to day - without these powerhouses single-celled life did not have enough available energy to form multi-cellular organisms.
1~1.3 Billions years ago: complex multi-cellular life: While the diversity, resilience, and ubiquity of single-celled life is amazing, I find complex multi-celled life much more astonishing. That colonies of cells can cooperate, specialise and form complex life is a wonderful achievement of evolution. Of course, it took a mind-boggling amount of time. Still, a significant step the results of which are quite distinct from life of 3 billions years ago. So your assertion is again inadequate.
~600 million years: emergence of the first neuron.
~580 million years: nerves and muscles, working together; first eyes
~550 million years: brains
And so the list goes on. Perhaps a significant development every 10-20 million years.
~540 million years: hearts and circulatory systems
There is a giant change from single-celled life to cats, dogs, and humans. What you should be saying is that, as a programmer, you are amazed that all life on Earth has the same genetic code - that the 3 base-pair codon is almost universal in every cell and organism on the plant. I suppose I do like you perspective though, when you look at a yeast cell, an oak tree, and a human and realise they are all related, all cousins, all derived from an evolutionary chain billions of years in the making.