Underground Poka-yoke

20140614-165153-60713868.jpg

Poka-yoke is a Japanese term that means “mistake-proofing” or “error-proofing”. Simply put, poka-yokes are mechanisms that make errors visible or, in their most advanced form, impossible to do. The world is full of poka-yokes, some designed on purpose, some not.

You can find one example in the picture. A broken subway turnstile with a sticker that a) tells everybody that the mechanism is broken, and therefore, not ready to use and b) prevents any customer from putting the subway ticket in the slot (what will have unexpected consequences)

Tags: ,

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: