Beyond 60% utilization, the average response time doubles. By 80%, it has tripled. As disk I/O latency is often the bounding resource for an application, increasing the average latency by double or higher can have a significant negative effect on application performance. This is why disk utilization can become a problem well before it reaches 100%, as it is a queueing system where requests (typically) cannot be interrupted and must wait their turn.

— Brendan Gregg, Systems Performance

When faced with the choice between two things you need that are seemingly at odds, go slowly to figure out how you can have as much of both as possible. There is almost always a good path that you just haven’t figured out yet, so look for it until you find it rather than settle for the choice that is then apparent to you.

— Ray Dalio, Principles

The good news is that, as Leibniz suggested, we appear to live in the best of all possible worlds, where the computable functions make life predictable enough to be survivable, while the noncomputable functions make life (and mathematical truth) unpredictable enough to remain interesting, no matter how far computers continue to advance.

— George Dyson, Turing’s Cathedral

Insistence on a single culture shuts down learning and cuts back resilience. Any system, biological, economic, or social, that gets so encrusted that it cannot self-evolve, a system that systematically scorns experimentation and wipes out the raw material of innovation, is doomed over the long term on this highly variable planet.

— Donella H. Meadows, Thinking in Systems

Never take for granted that the receiver has the same reality as you. Never take for granted that the receiver will interpret the message the way it was intended. Communication is not an absolute, finite thing. Always assume as many different realities exist as there are different people involved in the communication.

— Christopher Hadnagy and Paul Wilson, Social Engineering