Microsoft has always had the opposite approach, relying on their channel network to provide a level of foot-on-the-ground services that its business customers need.

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The lower end of the channel also lines up with the 200-week Moving Average, which will be another crucial technical level.

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Stocks that fit that description for potential follow-on trades include Netflix (NFLX), which has formed a tight upper level channel and still has a high short float, Google (GOOG), which is hanging out near all-time highs, Quallcomm (QCOM), and eBay (EBAY).

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Sediment-carrying rivers have been diverted, sea level has risen (increasing the volume of water in the lagoon), a deep-water channel has been dredged for shipping, and turbid waters are killing the eel grass that stabilises mud flats.

ECONOMIST: Flood barriers