There is no technical opposition or incompatibility between OO and FP. But there are rivalries of underlying mindsets. OO is for incrementality—required to deal with irreducible complexity. FP is for compositionality—required to deal with reducible complexity.

There is no technical opposition or incompatibility between OO and FP. But there are rivalries of underlying mindsets. OO is for incrementality—required to deal with irreducible complexity. FP is for compositionality—required to deal with reducible complexity.