The 50th Percentile Deadline
Elon Musk is the greatest business operator alive, but his approach to deadlines sounds like sabotage:
Listen to his recent appearance on A Cheeky Pint.
"I'm constantly addressing the limiting factor. On the deadlines front, I generally actually try to aim for a deadline that I at least think is at the 50th percentile. So it's not like an impossible deadline, but it's the most aggressive deadline I can think of that could be achieved with 50% probability. Which means that it'll be late half the time.
What can I say that's actually helpful to people? Generally, a maniacal sense of urgency is a very big deal. You want to have an aggressive schedule and you want to figure out what the limiting factor is at any point in time and help the team address that limiting factor."
After reading the excellent Musk biographies[^1], this modus is not surprising. But the podcast is the best articulation of this ever-present idea: An engineer estimates a project will take a month. Musk demands it in a week. If the engineer pushes back, Musk cuts the timeline to three days.
Why engineer this level of stress?
§The Gas Law of Productivity
Work behaves like a gas. Time allotted will match time allocated. This is also known as Parkinson's Law: work expands to fill the time available.
Give a team one week to complete a task, and it takes a week. Give them two days, and they often deliver with the same quality. You force people to strip away the polish nobody asked for. The meetings which should have been emails, the dashboards which are destined to collect dust. The team will move faster because they lack the time to stall.
Musk explained his framework on the podcast:
There is a law of gas expansion that applies to schedules. If you said we're going to do something in five years, which to me is like infinity time, it will expand to fill the available schedule and it'll take five years.
Physics will limit how fast you can do certain things. So scaling up manufacturing, there's a rate at which you can move the atoms and scale manufacturing. That's why you can't instantly make a million units a year of something. You've got to design the manufacturing line. You've got to bring it up. You've got to ride the S-curve of production.
Think about time allocation this way: given physical constraints and perfect efficiency, what is the minimum wall-clock time needed to complete this task? It's way shorter than the initial estimates would suggest. What is the rest of the space for? Figure out what the floor is, anchor to it. Solve the bottleneck which is stopping you from achieving the perfect timing.
§The Math of Missing Deadlines
Aiming for a 50% failure rate sounds demoralizing. Half your projects will miss the mark. But look at the math.
If you set a brutal deadline and hit it half the time, you still lap the competition. Even your failures move faster than their successes. Competitors plan for a month. You plan for a week. You miss the mark. You finish in two. Still a good result.
§Micro-Deadlines: Applying the 50% Rule
I try to scale this concept down to daily work via timeboxing.
Instead of working on a bug until it is fixed, I box it. I allocate a maximum of two hours. It prevents lingering. I do this for most tasks. When timeboxed, this is the one thing I will focus on. And I can't step away until the timer is done.
But we can push this further.
Instead of setting a comfortable two-hour timer, you set the timer for 30 minutes. Build a schedule with a 50% probability of success. If you miss the mark, you still learned more about the problem and the blocker. Take that data into the next box and repeat. The next time you are ready to tackle this bug, refresh your memory on what you have already researched. Then start trying a new approach, and a new approach, and a new approach until the problem is solved.
[^1]: Elon Musk by Ashlee Vance, and Elon Musk by Walter Isaacson.