This article argues (somewhat clumsily) that despite the huge investment of money and time we are no nearer to making a computer with generalised intelligence. Because it's impossible.
Why general artificial intelligence will not be realized - Humanities and Social Sciences Communications
The modern project of creating human-like artificial intelligence (AI) started after World War II, when it was discovered that electronic computers are not just number-crunching machines, but can also manipulate symbols. It is possible to pursue this goal without assuming that machine...
www.nature.com