This past weekend consisted of three long days of meetings and work sessions for the Big Fish musical; Sunday went fourteen hours. I had a hunch that late in the day wasn’t the best time to introduce a new song, and now [science has my back](http://www.nytimes.com/2011/08/21/magazine/do-you-suffer-from-decision-fatigue.html?_r=3&pagewanted=all):
> No matter how rational and high-minded you try to be, you can’t make decision after decision without paying a biological price. It’s different from ordinary physical fatigue — you’re not consciously aware of being tired — but you’re low on mental energy. The more choices you make throughout the day, the harder each one becomes for your brain, and eventually it looks for shortcuts, usually in either of two very different ways. One shortcut is to become reckless: to act impulsively instead of expending the energy to first think through the consequences. (Sure, tweet that photo! What could go wrong?) The other shortcut is the ultimate energy saver: do nothing. Instead of agonizing over decisions, avoid any choice. Ducking a decision often creates bigger problems in the long run, but for the moment, it eases the mental strain.
Writing involves a dozen choices every sentence, a thousand every scene.
Discussing material with producers and a director means understanding and deciding between myriad possible options — and the more people in the conversation, the more choices to consider.
And casting? Exhausting. It feels like it should be one of the easiest parts of production — you’re not *doing* anything, just sitting there and listening — but it wears you out. I’ve been through casting on five projects, and each time I’m amazed how tough it is. You’re trying to compare the actor you just saw versus the actor you saw yesterday versus the actor who won’t audition.
The article explains that sugar (glucose) is one of the quickest ways to restock your willpower supply. That’s why writers get fat.
(link via [@mjeppsen](http://twitter.com/mjeppsen))