sit there marveling that we’re going to reduce the efficiency of some operations and make the entire plant more productive. - Eliyahu M. Goldratt

Flow means that inventories in the operation are moving. When inventory is not moving, inventory accumulates. Accumulation of inventory takes up space. Therefore, an intuitive way to achieve better flow is to limit the space allowed for inventory to accumulate. To achieve better flow, Ford limited the space allotted for work-in-process between each two work centers.

What is the real goal? Nobody here has even asked anything that basic.

When a proto-type — a new initiative — doesn't work, we face two alternatives: one is to bitch about reality and the other is to harvest the gift it just gave us, the knowledge of what has to be corrected.