That is sort of correct but way too short term thinking. Latest period between serious wars and economic disruptions such as fall of USSR was around 40 years ag

That is sort of correct but way too short term thinking. Latest period between serious wars and economic disruptions such as fall of USSR was around 40 years ago. Various banks failed three times in the meantime, besides that big event. Banking jobs have not recovered, they have been consolidated and automated away. Talking anything about black swans in computer programming jobs is premature. They're too new to even hit one major upheaval, in the meantime having faced dotcom boom and bust...