With a bulb-inspired design, this nifty door knob features “an internal generator that stores energy and illuminates the way in emergencies or whenever you need a guide to the loo.” Click here for first picture in gallery.

How it relates to the butterfly effect theory is esoteric but simply by expanding the knob’s function to include illumination, you effectively change the way you use the knob.

[via Yankodesign]

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