You're not scrolling Instagram. You're reading something vaguely useful, checking something loosely relevant, doing something that *feels* like work. And an hour later, the thing you actually needed to do is still untouched.
This isn't a focus problem. It's a commitment problem.
Pseudo-Work and the Unanchored Brain
When you sit down without a clear committed task, your brain doesn't go idle - it seeks the nearest thing that reduces discomfort while avoiding real engagement. Researchers call this task-adjacent avoidance: activity that mimics work closely enough to feel acceptable, but doesn't move the real needle.
A landmark study by Peter Gollwitzer on implementation intentions found that the single biggest predictor of whether people actually do what they planned isn't motivation - it's specificity of commitment. People who decided *exactly* what they would do (not just "work on the project") were 2–3x more likely to follow through.
Gollwitzer, P.M. (1999). Implementation intentions. *American Psychologist*
The drift you experience fills the gap left by an absent commitment. Without a clear anchor - "I am doing *this specific thing* right now" - the brain accepts the next best substitute.