A finger in the what again?

Jordan Kurzweil, in his weekend piece on Tech Crunch retreading all the usual - and important - arguments for why newspapers need to rethink their digital strategies, may also have given us a fine example of why we still need copy editors.

 In case you can't read that: The paywall, whether for Gannett or other publishers, is a finger in the dyke, a cover-up for tectonic shifts in their businesses.

Now, you can argue all you want that "dyke" is an alternate spelling of "dike." But in this case, when "finger" is also involved, a good copy editor would probably have suggested maybe not ...