Sure, some "systems thinking" falls under the woo-umbrella. But I'd hardly call the hard systems sciences New Age pseudoscience. System Dynamics, Agent-Based Modeling, etc all have methods and evaluative feedback loops in terms of measuring whether they are predictive or not. If you system dynamics model predicts a 10-year S-curve and you see 20 years of exponential growth, you probably don't have the model correct.
If you stop at the level of "everything is connected" - it can lead to all sorts of woo-ey conclusions - much like a light understanding of quantum physics can (some of which I happen to agree with, but aren't yet falsifiable) - but SD was developed at MIT by engineers...
If you stop at the level of "everything is connected" - it can lead to all sorts of woo-ey conclusions - much like a light understanding of quantum physics can (some of which I happen to agree with, but aren't yet falsifiable) - but SD was developed at MIT by engineers...