Yes, but probably not much in civil engineering (massive changes in electronics design, but not civil, e.g). Principles are still pretty much the same. And those old guys really knew their stuff. We’re being taught less and less in college these days - including practical projects. And relying probably too much on computers, hoping those who designed the software knew what they were doing and didn’t screw up.
But your post indicated that the definition of redundancy might change, which would be totally false and very misleading to those not knowing.
You are right and looking back I can see where I might have made it seem that the definition of redundancy has changed it hasn’t.
I know that with the engineers I’ve worked with, the best ones are well past retirement age and are able to spot stuff that no software program could. However, I believe that there have been advances in the density of concrete as well as steel.
And regardless of what anyone says, nobody will convince me that it was impossible for the resurfacing to play a role in this.
At the risk of sounding insensitive, the insurance companies would PREFER this to be terrorism, because otherwise they are out hundreds of millions of dollars. So, multiple insurance companies will have their own experts there to try to pin the blame on someone else and they WILL NOT cover it up if it’s terrorism.