even if it's a small change it might impact a lot of different areas and amount to a big change overall.

Case in point, 100 yrs ago some geniuses decided the wolves in Yellowstone park needed to be eliminated (because wolves are evil), so they were all hunted and trapped out.

In a short time the Elk population exploded in Yellowstone and they overgrazed eating all the saplings and killing new tree growth. Pretty soon forestation declined to a fraction of what it once was. This caused erosion problems with waterways and impacted the beaver population and threw them into serious decline which then reduced the number of marshy wetland areas that moose, martens etc thrived in.

The lack of wolves allowed coyotes to flourish, who in their turn, naturally suppress antelopes and small deer as well as foxes, who eat ground nesting birds, rodents, etc. These changes affect how often certain roots, buds, seeds and insects get eaten, which can alter the balance of local plant communities, and so on down the food chain all the way to fungi and microbes.

Now that they introduced wolves back into Yellowstone 20 yrs ago Park Rangers are finding it difficult to re-establish that natural equilibrium that existed between all the species of animals and plant life. That's been a huge overall impact that stemmed from one small change.

I think the effects from this one change (hiring Wintrich) will be seen in a lot of different ways down the road.