Mathematicians Are Hoarding a Type of Japanese Chalk

Re:Mathematicians Are Hoarding a Type of Japanese Chalk by facepalm on Tuesday June 16, 2015 @03:54AM (#9724309)

"there’s no way to tell when a marker is running low"

Hm, maybe that's a problem that can be solved and earn the inventor good money?

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Re:Mathematicians Are Hoarding a Type of Japanese Chalk by benplumley on Tuesday June 16, 2015 @08:33AM (#9725247)

For a product that's disposable, I doubt any such system could justify its cost.

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Re:Mathematicians Are Hoarding a Type of Japanese Chalk by noir_lord on Tuesday June 16, 2015 @10:29AM (#9726026)

Depends on the cost to implement and the margin you can charge over competitors I guess.

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Re:Mathematicians Are Hoarding a Type of Japanese Chalk by Symbiote on Tuesday June 16, 2015 @11:01AM (#9726271)

The whiteboard pens we have at work have a semi-transparent barrel:

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