Friction is the world's most underappreciated force.

It works against most people. But we can leverage it to work for us.

• To do more of something, reduce the friction.
• To do less of something, increase the friction.

Minimize start-up costs, maximize effectiveness.

add friction where you find yourself doing things you don’t want to do.

Friction makes sparks and sparks start creative conflagrations.

You can turn your flow into stock.

The things that cause you friction are the things from which you might make art. Surely losing is one of the most endemic frictions of our journey.

In the act of exchange, as in the transmission of power by machinery, there is friction to be overcome, losses which must be borne, and limits which cannot be exceeded.

Stock and flow” is an economic concept that writer Robin Sloan has adapted into a metaphor for media: “Flow is the feed. It’s the posts and the tweets. It’s the stream of daily and sub-daily updates that remind people you exist. Stock is the durable stuff. It’s the content you produce that’s as interesting in two months (or two years) as it is today. It’s what people discover via search. It’s what spreads slowly but surely, building fans over time.” Sloan says the magic formula is to maintain your flow while working on your stock in the background.

By recruiting a good team and eliminating as much Friction (discussed later) as possible, you’ll achieve the results you’re seeking.

production.” Their difficulties were overcome only when it was successfully established that, for any given amount of heat produced by friction,

Stock and flow” is an economic concept that writer Robin Sloan has adapted into a metaphor for media: “Flow is the feed. It’s the posts and the tweets. It’s the stream of daily and sub-daily updates that remind people you exist. Stock is the durable stuff. It’s the content you produce that’s as interesting in two months (or two years) as it is today.

Stock and flow” is an economic concept that writer Robin Sloan has adapted into a metaphor for media: “Flow is the feed. It’s the posts and the tweets. It’s the stream of daily and sub-daily updates that remind people you exist. Stock is the durable stuff.

How to keep momentum: minimize startup costs.

When working on multiple projects, the goal should be to minimize startup friction.

How I handle it: every time I finish working on something, I scribble down what I just completed, my current thoughts, and the exact next steps.

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.

There is friction all the time in different places,” Armour said. “Friction is natural. When I had friction with someone it could’ve been because I had short hair, I smiled in the morning, I could bench press more than them, I rode a motorcycle, or because I’m a woman, or because I’m black. But honestly, I didn’t care because my number one goal was to focus on the mission and be the best pilot I could be.”