Too often the employees don't really know how to use the new equipment properly, so the buyers don't reap maximum productivity gains.

FORBES: A well-rounded life

In practice, people "can't be bothered" in the UK to make changes, says Prof Anderson, partly because energy is too cheap, and partly because we don't use as much power-hungry air conditioning equipment as other countries.

BBC: Technology

The carriers issue marketing claims that often don't pan out in real use, partly because of variations in location, network congestion and equipment.

WSJ: A review of T-Mobile's HSPA+ system