At least with your given example you effectively cannot reach the scientific knowledge required to manufacture composites and especially turbines without alread

At least with your given example you effectively cannot reach the scientific knowledge required to manufacture composites and especially turbines without already having a complete understanding of steam power. One is substantially less complicated both theoretically and implementation wise than the other. And, from a business perspective, if you don't grab the low hanging fruit now to stay competitive your competition will and you will find yourself obsoleted and bankrupt on your quest for airliners in the age before steam trains.