It is like trying to nail jelly to the wall. It also reveals that the concept of human evolution is a philosophy, not science. To the evolutionist there is but one primary fact in the universe evolution. Everything else is just data. The value of this data does no depend upon its intrinsic quality but upon whether or not it supports evolution and its time scale.
Good data is that which supports evolution.
Bad data is that which does not fit evolution, and it is to be discarded. Make a roof for it and finish the ark to within 18 inches of the top. Put a door in the side of the ark and make lower, middle and upper decks. But, as modern evolutionary theory developed during the 1930s, this objection to Australopithecus disappeared. Natural selection can work independently upon adaptive traits in evolutionary sequences, changing them at different times and rates.