Indeed! It's one of the reasons I like the adapter pattern (aka hexagonal architecture) so much. Data flowing through some 100 classes and 300 conditionals the

Indeed! It's one of the reasons I like the adapter pattern (aka hexagonal architecture) so much. Data flowing through some 100 classes and 300 conditionals then into a `memory-payments` and back takes mere milliseconds. "Memory payments" is then some silly wrapper around a hashmap with the same API as the full-blown production payments-adapter that calls stripe over HTTP. Or the same api as the "production adapter" that wraps some RDBMS running on the other end of the data-center.