I would agree that human nature is a constant. On the contrary values, mores & customs do change. You have based your rejection on the notion of a man's word being his bond as a value prevalent 80 yrs ago on several hypotheses & suppositions without any first hand knowledge. I know that a man's word being his bond was a universally understood & substantially held value of that generation & indeed the one before it because I lived it. Our society has changed in a great many other ways regarding values, custom's & mores in that time span as well. Not going to go there in this thread or post, but if you would like to discuss just say so.
I understand how you feel about it. I really do. But hypothesis and conjecture is all either one of us has to go on here, other than logic.
So let's try logic, yes?
The only way to
factually know the truth of the statement "his word is his bond" is to observe person 24/7. You'd need to witness, firsthand, what that person said, and then track that person until the conclusion of the event for which they gave their word. Some events like that could span decades, or even lifetimes. Doing that for a single person would be a full-time job; a massive long-term undertaking.
But, for the sake of logical argument, let's go ahead assume that you've observed 1000 individuals 24/7 across all these decades.
The US population, 80 years ago, was about 130,000,000 people. Your 1000 people observed would mean you would "know" about the word-as-bond factor of 0.000769231 percent of the population.
Today, the US population is about 328,000,000. Meaning that today, you'd have observed 0.000304878 percent of the population.
Of course, it's not actually possible to follow a person 24/7 for their lifetimes. So the real percentages would be far smaller, and far less accurate. We don't even know how many times our own children give their word and then break it while they're actually living with us. Because we are not with them all the time to witness it.
Therefore, logically, there is simply no possible way you, or anybody else, could arrive at a
logically or factually defensible conclusion that, 80 years ago, people kept their word more than people do today. It's pure, unprovable speculation.
Thus, I remain extremely skeptical.
Nonetheless, I give you my word that if you are able to provide meaningful data to support your theory, I will reconsider it with an open mind. And my word is my bond on that. 😀