The consequence of this deficiency is huge in many practical situations.

Extensive simulation studies are conducted which indicate that the approach performs well for practical situations and is comparable to the existing methods.

Dynamic mechanistic models have proved more suitable for extrapolation, but they remain computationally expensive and are not applied easily in practical situations.

Naturally much of the elementary science to be taught should be introduced in connection with practical situations in kitchen, school garden, shop, sanitation, etc.