Random Analogies
"Chronic dehydration is like putting that live lobster into a pot of cool water as it sits on the stove. If you then turn on the stove burner and slowly raise the water temperature to boiling, the lobster doesn't even realize it is being cooked. In the same way, if everyday your water intake is slightly less than needed, your body will not react swiftly, nor dramatically."
Or for the British out there a full stop. Or from the linked page:
"A nonsense mutation is a point mutation that introduces a premature stop codon into the part of the gene that encodes a protein. A stop codon is like a period at the end of a sentence: it instructs the ribosome to stop making the protein. So if a mutation leads to an early stop codon, only part of the protein will be made. 'Half-baked' proteins that result from nonsense mutations are often nonfunctional or defective."
