Invisibility isn't about hiding in shadows. It's about being so average, so unmemorable, that the eye slides right off you.
Every environment has a "baseline"—the average behavior, look, and energy of the crowd. To disappear, you must match this baseline perfectly. If the crowd is walking fast, you walk fast. If they are on their phones, you are on your phone.
The human brain looks for "features"—bright colors, logos, extreme height, loud noises. A Gray Man
removes all features.
Wear: Medium colors (gray, navy, beige). No logos. Standard fit.
Move: Smoothly. No sudden jerks. No loud footsteps.
If you are being followed or observed, do not hide. Instead, position yourself near someone more interesting than you. A loud drunk, a person in a bright red coat, a fighting couple. The observer's eye will be drawn to the "feature," rendering you invisible by comparison.
This applies online too. Don't have a private profile with no photo (that's suspicious). Have a boring profile. A photo of a landscape. Reposts of generic news. Be so average that no algorithm flags you.
Blending in is just defense. The Mask teaches you offense: how to build entirely new personas to infiltrate hostile groups and extract information.