The Laffer effect is much stronger with capital gains taxes because ultimately capital gains are realized voluntarily.

FORBES: Capital Gains Tax is an Economic Monkey Wrench (2012)

In this context, a network effect is a positive feedback loop whereby platforms with stronger ecosystem of developers, content and service providers attract more customers.

FORBES: Who Wins, iOS or Android? Both, But Pity Everyone Else.

For all that the US recovery is seen in the US as too weak, one of the reasons it has been stronger than Britain's is that Americans can in effect borrow from investors, rather than banks, in a way that does not happen here.

BBC: Cable rehabilitates investment banking

If this succeeds in stimulating demand, Japanese saving will fall and the current-account surplus in due course will narrow. (In the short term, however, most of the effect will be masked by a cheaper yen.) Perhaps demand in Japan is already stronger than the figures suggest.

ECONOMIST: Japan��s economy

And I agree -- which is why this freeze won't take effect until next year -- (laughter) -- when the economy is stronger.

WHITEHOUSE: The 2010 State of the Union Address

Rather than intrinsic rewards having a stronger and more beneficial effect on us than extrinsic benefits I believe that there is a deeper interplay between these two drives, depending on the situation, what else is going on in our lives at time, and other factors.

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