Informal communication is more effective than formal most of the time.

大部分时候非正式的交流比正式交流更有效。

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A QA team can become much more effective and efficient by replacing an AD hoc testing approach with formal, repeatable processes that include test planning, defect cause analysis, and automated tests.

QA团队通过将包含测试计划、缺陷原因分析，和自动化测试的正式、可重复的过程，替代特殊的测试方法，以变得更加有效且高效。

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Word-of-mouth adds a layer of credibility and is more effective than other more formal forms of promotion.

口碑能更好地树立酒店的信誉，同时也比其他更加正式的推广活动更具优势。

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Although every successful organization has formal hierarchies, they are more effective when they do not have to be rigidly enforced.

FORBES: Are You a Leader or Just Bossy?

For that reason, less-formal processes may sometimes be more effective and timely.

FORBES: Transcript

Two weeks ago, a new chief executive, Mike Darcey, arrived at News International and in a statement issued on Friday night, he said that Mr Witherow would take over at the Times "effective immediately, subject to formal approval as editor by the independent directors" of Times Newspapers Ltd.

BBC: John Witherow is appointed new editor of the Times