Offense vs Defense

To me, the most important single question at a point in time with regard to strategy — I’m not talking about tactics, I’m not talking about what’s going to go up tomorrow, I’m not talking about eternity, but for the middle term, let’s say three to five years — the most important thing at a given point in time is how you’re balancing offense and defense… we want to have a lot of offense when prices are low, psychology is depressed and the outlook is bad to most people but we don’t think it’s so bad. And we want to have defense when prices are high, psychology is buoyant and everybody sees a brilliant future, and we don’t think the future may live up.

– Howard Marks

All Things Are Made Of Atoms

If, in some cataclysm, all of scientific knowledge were to be destroyed, and only one sentence passed on to the next generations of creatures, what statement would contain the most information in the fewest words? I believe it is the atomic hypothesis (or the atomic fact, or whatever you wish to call it) that all things are made of atoms—little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another. In that one sentence, you will see, there is an enormous amount of information about the world, if just a little imagination and thinking are applied.

– Richard Feynman

Complex Systems

A complex adaptive system has three characteristics. The first is that the system consists of a number of heterogeneous agents, and each of those agents makes decisions about how to behave. The most important dimension here is that those decisions will evolve over time. The second characteristic is that the agents interact with one another. That interaction leads to the third—something that scientists call emergence: in a very real way, the whole becomes greater than the sum of the parts. The key issue is that you can’t really understand the whole system by simply looking at its individual parts.

– Michael Mauboussin