Consider the consequences of time and ingenuity

Consider this, excerpted from the book The Rational Optimist: How Prosperity Evolves, by Matt Ridley:

[L]ooking back now . . . the middle class of 1955, luxuriating in their cars, comforts and gadgets, would today be described as ‘below the poverty line’. 

. . . . .  

Today, of Americans officially designated as ‘poor’, 99 per cent have electricity, running water, flush toilets, and a refrigerator; 95 percent have a television, 88 percent a telephone, 71 percent a car and 70 percent air conditioning. Cornelius Vanderbilt had none of these.

Celebrating (the curious case of a traffic non-incident)
Do good results come from talking up the possibilities?