The entropy is -0.7log2(0.7)-0.3log2(0.3) = 0.88 . The post is very confusing, in no case can deterministic hashing increase the entropy. And if it outputs onl

The entropy is -0.7log2(0.7)-0.3log2(0.3) = 0.88 . The post is very confusing, in no case can deterministic hashing increase the entropy. And if it outputs only half of input entropy then it's only 8% more efficient than von neumann in this case.