What blows my mind is that the grand ocean liners (Four Funnel Liners, like the Titanic) were all built over a span of 25 years. So the jet age is already at le

What blows my mind is that the grand ocean liners (Four Funnel Liners, like the Titanic) were all built over a span of 25 years. So the jet age is already at least twice as long as the era of production of those great steam ships was.