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Comment by csours | Hacker News Reader

I think you've actually hit on the real selling point here - ADVERTISING!

Think of it as a VERY slow, VERY large TV screen. With red, green, and blue blocks, they could advertise almost anything!

The value generation from the ad would almost certainly outpace the value generation from energy storage!

Also, you could encase your bitcoin wallet in a block, creating the ultimate block-chain block-chain!

By god and the scientists, you're a genius maxxxxx!

> Think of it as a VERY slow, VERY large TV screen. With red, green, and blue blocks, they could advertise almost anything!

I don’t think that works if the blocks are reflecting light rather than emitting it.

Don't worry we've already pivoted. We're no longer using concrete blocks, now it's giant LEDs.

Unfortunately we lost the entire first floor when we dropped a block and filled it in.

And efficiency's down to 12% because of all the backlights for the ads and all the graphics chips got hacked and are mining bitcoin.

> I don’t think that works if the blocks are reflecting light

From a long distance the colors would merge in the eye. And this would be visible from a long distance. Imagine it on a high spot next to a city.

Use 4 colours then: cyan, magenta, yellow and black (CMYK, as used in print).

Well they could be transparent (Red/Green/Blue filter) glass blocks stacked in front of a reflective screen...

One question is... visible from the sides, from above, or both?

Or just CMYK like printers...

Why wouldn't it? Your eye does not know the provenance of the light that hits it. Red light is red light.

We used to call those 'drive ins'.

Upvoting black and white blocks.

Ok, someone does not like black and white images I guess. But downvoting because of colorphilia is cruel!