Most of them are mere shifts of emphasis, some are marginal tweaks, and a few are either substantive or nonexistent.
But there's little evidence "low-information undecideds" will suddenly be turned by learning how Romney would regulate energy or tweak marginal tax rates.
The result, typically, is to identify the right combination of tweaks capable of bringing about marginal changes that, when multiplied by a huge number of instances, or allowed to work over a long time, produce a significant effect".It is about building a mountain with pebbles," says Jim Manzi, the boss of Applied Predictive Technologies, which sells data-crunching software.
We have tweaked some assumptions, with the net effect of marginal increases in 2013 to 2015 pretax profit estimates.
In an industry often criticized as making pricey "me too" drugs that involve minor tweaks to competitors' products, as well as promoting medicines of marginal value, Wyeth has decided to go full bore against Alzheimer's, a disease that has defied effective treatment since it was first identified a century ago.
It has made a tweak to fuel subsidies that was as politically painful as it was financially marginal.
Flip-flop category: marginal tweak.The same week, Obama said he didn't think that "mental distress" alone was sufficient justification for a late-term abortion, prompting the president of the National Organization for Women to rebuke him for feeding the perception that women seek abortions because they're "having a bad-hair day".
They tweaked the credit-scoring software of a microfinance firm so that only a random subset of people with marginal credit histories were accepted as clients.
