The focus of the domain name was on the nature of the system (ontology), and the action methodologies referenced how you acted and how you gained knowledge (epistemology)
Each domain had its own particular relationship between cause and effect
In the ordered domains there is a known or knowable relationship between cause and effect
the complex domain there probably isn’t one and even if there is we will only know it with the benefit of hindsight
in chaos there is no relationship at all the system is in a sense random
So why change to the use of Obvious?
’Simple’ doesn’t really describe the relationship between cause and effect and we can in effect be simple in each of the domains
Complex domain: it’s simple to trigger safe-to-fail experiments around any coherent hypothesis
Chaotic domain: simplicity is about acting to create some type of constraint or pattern
Complicated domain: it is a simply matter of delegation to the appropriate expert
I don’t love ambiguous language so after some thought I came up with obvious, as the relationship between cause and effect is not only known or easily knowable, but it is also self-evident to any reasonable person.
As to the dynamics, nothing changes, its just a better name for the domain