>A Google spokesperson told Ars that Duda came up with a theoretical concept that isn't directly patentable, while Google's lawyers are seeking to patent a specific application of that theory that reflects additional work by Google's engineers. and this is how you do it, children. You patent a straightforward implementation and application ("additional work by engineers") of the idea, and thus you effectively prevent…
You can't patent an idea, only an implementation of an idea.
How about where the line's even thinner - Amazon's infamous 'one click purchase' 'algorithm' - which they managed to patent - would you call that an 'idea'? An 'implementation'? A 'process'?
I think anything, including ideas can be patented - and if Google is trying to go by the spirit of the law rather than being Pharisaic about it, they need to cut this guy in for a percentage of the patent of his idea, rather than shafting him because they can.