When I worked as a doctor in a bush hospital in Tanzania, East Africa, I treated many patients for a disease called Bilharzia, or Schistosomiasis. This is a parasitic disease caused by several species of fluke, or flatworm, of the genus Schistosoma. The particular form of the disease which I treated was the one caused by the species Schistosoma haematobium.1

This worm, like so many other parasites, has a bizarre and complex life-cycle which defies an evolutionary explanation.

It assumes seven different forms as it progresses through its life-cycle, and part of that cycle takes place within an intermediate host, a freshwater snail. The complexity of such organisms points to a Creator; but the existence of disease-causing parasites and microbes does also raise questions concerning God’s “very good” creation and the global Flood of Noah’s day.

Evidence for creation

As far as their physical structure is concerned, all living creatures—including the most basic and ‘simple’ forms of life (one-celled organisms)—are stupendously complex, sophisticated, computerized machines. Molecular biologist Michael Denton has estimated that if we knew how to build a machine as complex as the cell, it would take at least one million years to build one cell—working day and night, and churning out the parts on a mass production basis.2

One kind of complexity is the way in which some animals exist in several completely different forms during their life-cycles. The butterfly, for example, exists as an egg, a caterpillar, a chrysalis and a butterfly. Within the chrysalis, the internal organs of the caterpillar dissolve into a soup, and then this soup organizes itself into a beautiful, incredibly complex, adult butterfly! The whole process, from egg to butterfly, is coded in the genes, and is a marvel which defies any kind of evolutionary explanation.3

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