Extinction is the way of nature  Scientists estimate that over half of the species that have ever come into existence on this planet were already extinct before humans developed even the most primitive of tools  This constant natural process of species emergence and extinction, however, is ignored by those who wish to trace the blame for more recent extinctions to humanity' s use of technology, with its consequent effects on the environment
These people must be made to understand that the species that have become extinct in modern times would have become extinct by now even if humans had never acquired technology
The author fails to consider that there are probably species in existence that have not yet been identified and studied by scientists.