If several highly educated scientists all study the same scientific data, which of the following is most likely to explain why they may all have different conclusions? Not all scientists study the data with similar effort.
Scientists make slight variations in procedure to more broadly test.
Conclusions involve the scientist's interpretation.
Scientists state conclusions based on their own research needs.

Earth's escape velocity is 11.2 km/splanes only fly up to 0.3 km/s at most.planes won't even be able to get out ofearth's gravitational pull.nonetheless survive the vacuum.

Ibelieve this is the answer:     evolution has no "goal". it is "simply" the survival of the fittest under a given condition. what should be the advantage of living longer? getting kids (=spreading the own genetic information) is done latest until the mid-40s after that we have not much biological meaning.  in addition,  not only does evolution not have a "goal," evolution doesn't necessarily mean "make us better! " it's absolutely possible to evolve negative traits.    hpe i could : )