To see interlocking complex systems should cause reflection on origins. It has on many fronts, no doubt. In that regard ID and evolution are similarly trying to understand origins. One can posit a designer, a process, an accident, a combination of designer & process, ....
I don't know if any of those are default, unless one has a presupposition one brings to the table.
Scientific materialism demands that the scientist (in the U.S.) only consider undirected physical causation. In short hand, that is the "randomness" pillar of evolution theory: random mutations - natural selection > species.
The intelligent design hypothesis is bucking that paradigm (which is not demanded in Asia and Eastern Europe) by asserting that intelligent causation is a better explanation for certain features of life.
One side says accidents only - the other accidents + direction.