In the 1930s - Dr. Shewhart said “Changes that result in improvement come from application of knowledge.”
It can be said that application of knowledge could be President Trump's 40 years of making deals.
True and Lasting change often comes from outside the system like President Trump not being from Washington and when he refers to draining the swamp! It will be interesting to watch the media and listen to the Washington Swampers make negative of the meeting with North Korea. Why? Because they want the status quo and are stagnate in their thinking to try new approaches.