Page:SELECTED ESSAYS of Dr. S. S. KALBAG.pdf/166

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Environmental 3) Alternate Pathways: In nature everything Education can undergoes change, though ever so slowly. And start as there are always many paths they can take. Not all an extension of Safety education, of these paths, produce change at the same rate. with which Some are fast and some are slow. Some take many in the precedence over others. But when the primary Industry are paths, cannot cope with the input, the alternate already familiar. paths begin to gain significance. A simple example will illustrate the principle. When rain falls, the evaporation of water is the first reaction. When the quantity of water in the rain is more than what can evaporate off, it falls as rain on the ground. What falls on the ground is absorbed in the soil and when it saturates, it percolates down into the ground as groundwater. When the rainfall accumulates on the ground, it indicates that the rain input is more than the percolation rate and it starts to runoff- the third path. Thus, each pathway is affected by others and has the capacity to affect others. Thus, when we ingest a "chemical" our body reacts to eliminate it through metabolism. Some are eliminated (after transformation) fast, some are eliminated slowly. If we ingest these chemicals, at a high dose, the common pathway gets saturated, and the chemical overflows into other paths. These effects may be harmful (or deliberately produced in order to deliver a drug) at a specific point in our body. The laws of nature are beyond our control. We can only understand them so that we can live in harmony with them. (4) Laws of Scale: There are some operations which give economy of scale. Others act in the reverse direction, (the law of diminishing returns.) Both effects may be seen in the same operation in different phases of growth. Urbanisation is a phenomenon arising indirectly out of the economics of scale. Urbanisation overloads the processes Rural Development Through Education System 153

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