But, we read about bridges, and some of the black swan events that go along with big bridge projects.
So, here's one of those "Who knew?!" project events that most would call a black swan:
Now we learn:
I really can't remember the last time I put hydrogen-assisted cracking on a project risk register... perhaps never! Indeed, I can't ever remember discussing it, so -- prima facia -- it must be a black swan: Something not envisioned; something with devasting effects; something evident in hindsight.