Do financial instruments count as technology?

Re this, JB comments that showing any kind of relationship between financial and technological innovation is kind of hard, but rather liked this illustration – of what happens when you let an entrepreneur also run monetary policy. (When was Spain’s first bubble? Spanish Wikipedia is big on Anglo disasters, but doesn’t mention Spanish railways in…
A broker converting coin into MIssissippi stock in the Dutch print series, Het grote tafereel der dwaasheid, The great scene of folly.