Prefer passive solutions over active ones
Summary: Lower failure rate, lower maintenance.
Prefer passive solutions over active ones
Why this matters
Active systems (sensors, motors, electronics) require power, maintenance, and updates. They fail. Passive systems (gravity, optics, mechanics) just work.
Principle
A ramp never runs out of batteries. A painted line never has a software bug. Always check if a passive solution exists before specifying an active one.