"A good analogy to think about is dogs, they are all the same species but different breeds are good for different activities like a German Shepherd is a good guard dog, a Kelpie is a good sheep dog and a Maltese terrier would be a good family pet. Each strain of probiotic is like a different breed of dog and there is not one size fits all, so you need to get the right strain to treat different health conditions."
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.