Swimming analogy

An analogy I find quite apt is underwater swimming. It is as if my mind were a swimmer in a river. Thoughts, feelings, sensations, and external events are waves and currents in the river. Some are very minor, some are very powerful. Sometimes I am near the surface of the river, near the light that comes from above, and can see more clearly. At other... 

Fish that spend their adult lives in the sea but swim upriver to freshwater spawning grounds to reproduce, analog (climate)... 

Minimization of the Cs-term results when mass transfer into and out of the stationary liquid is as fast as possible. An analogy would be to consider a person jumping into and out of a swimming pool if the water is shallow, the process ean be done quickly if it is deep, it cannot. 

Deleuze (2000) also suggests that the only effective way to learn is actively and bodily and, using the analogy of learning to swim, compares this with other approaches ... 

The PDA allows us to determine which barriers may be provided, modified, or removed to prevent accidents. A clearer picture of the distinct difference between physical and human preventive measures is provided by the following swimming pool analogy ... 

Melamine is a triazine ring with three amino groups and a widely used compound in the manufecturing of plastics, adhesives, flame retardants, fertilizers, and glues. Cyanuric acid is a structural analog of melamine. It may be found as an impurity of melamine. Cyanuric acid is an FDA-accepted component of feed-grade biuret, a ruminant feed additive. It is also found in swimming pool water as the dissociation product of dichloroisocyanurates used for water disinfection. 

As can be seen from this swimming pool analogy, solutions on the list fall into two general types, either make a physical (as suggested in 2,3,5,6,7,8,9,10,... 

---