Leading the Pedant's Revolt (or was that Which Tyler?) I heard somebody the other day saying they were "learning via Osmosis".
Now Osmosis, as we all learnt at school, is the tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane. The direction of travel is from the weaker to the stronger and like school dinners, potatoes are very often involved.
Thus, taking in knowledge via Osmosis implies that the learner has the stronger concentration of knowledge already, which defeats the entire analogy. Perhaps it's called "analogy" because it's the art of talking out of one's bottom. I imagine some super-pedant or pedant-monitor will shortly turn up to tell me it's a metaphor.
Our Tibetan Terrier has a wonderfully comfortable basket, almost like a Moses basket. He takes in things by Oz-Moses but don't go anywhere near his analogies.