But the more solid theory is that it's sort of like a societal reaction.

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In this view it is necessary to know, or to have a solid theory of how HR inputs are transformed into business outcomes, and to be able to provide control, training, and monitoring.

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But the policymakers who swallow these simulations have little way of knowing what is driving the results: is it deep theory, solid data, or arbitrary pruning?

ECONOMIST: Economic models

Surely doctors touting this theory have rock solid evidence behind it, right?

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First introduced by Alan Guth of MIT in 1980 to explain (among other points) why the geometry of the universe appears to be flat and why matter is distributed so evenly throughout space, the theory also offered solid grounds for modeling how galaxies formed as the universe evolved.

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Professor Shuji Hashimoto, director of the humanoid robotics centre at Waseda University in Tokyo, has a theory: robots need a solid dose of those Japanese manners (don't we all?) encompassed in the Japanese word kansei, which includes feelings, mood, intuitiveness and sensibility.

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Moreover, Dr Abrahamson's theory fails to explain how ball-lightning can pass through windows and other solid objects, as some claim.

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