from the flood-gates-opened dept.
ndogg writes "This story is all wet. Paulo Blikstein at MIT has created a water computer. The one boolean logic gate he created functions as a half-adder (i.e. both XOR and AND). He then proceeded to create a four bit adder."
The first 90% of a project takes 90% of the time, the last 10% takes the
other 90% of the time.