Entropy curve
		n For p/t between 0 & 1, the 2- class entropy is ¡ 0 when p/(p+n) is 0 ¡ 1 when p/(p+n) is 0.5 ¡ 0 when p/(p+n) is 1 ¡ monotonically increasing between 0 and 0.5 ¡ monotonically decreasing between 0.5 and 1 ¡ When the data is pure, only need to send 1 bit
								0.5