For a start, the Lenski Experiment is ongoing and has observed over 60,000 generations to date.
Secondly, it is not the only experiment being performed and not a single one of the other studies or experiments has produced contradictory results.
The results of this experiment perfectly fit what we know about evolution and the predictions we can make, and they provide even more insights into
the mechanicisms and nature of life on Earth.
Thirdly, a December 2015 paper
examined the findings and drew the conclusion that the increase of
fitness over time of an organism follows a power law model, rather than a hyperbolic model. This means that while the mean rate of evolutionary
fitness gain declines over time as the organism becomes more specifically adapted to it's environment, there is no upper limit to mutation and
modification. According to a hyperbolic model, there is a definable limit that cannot be overcome.
The abscence of an upper limit means that while biological evolution slows down over time, mutations can occur indefinitely, with nothing to prevent
an organism diverging into another species who are reproductively incompatible with their genetic ancestors after millions of years. If a limit is
found, you can say that "micro" and "macro" evolution are seperate processes. Without a limit, they are the same thing.
The reason bacteria were chosen for the experiement is partly because of the high rate of reproduction and their ease of culturing, but also because
of bacteria's age as a species. They are one of the earliest organisms and represent life in one of it's most fundamental forms.
If you want to dispute or disprove evolution, find a barrier, a hard limit, a biological mechanism that acts as a wall preventing one species from
becoming another. Also explain how life on Earth became so variably speciated, in a well educated, rigourously scientific manner.
Just saying, "we've never seen one animal becoming another" demonstrates an ignorance of not only evolutionary theory and what it postulates, but also
of the very nature of life itself. In nature, "species" as we define them don't literally exist. In reality, life is one teeming whole, an interactive
and interdependent biological mass. Everything turns into something that turns into something that grows into something, that interacts with something
else, that adapts to something, that becomes something else. "Species" is a human term defined by us based on what we can tell about an organism, it
is not a physical hard barrier that actually literally exists in nature. Life is a spectrum, not a monochromatic scale.
originally posted by: everyone
But then where is your indisputable evidence of god?
I had to chuckle, reading that your name is "everyone" asking this..