The Four 4s

How to derive every number upto infinity, using only four 4’s and math operators.


Firstly, how do people even begin to think about numbers this way?

That said, its fantastic to see people enjoying something so completely.

The Great Wall of India

Source: The Wall – Medium

 Speaking of silly walls across countries these days…this is one of the most delightfully absurd things I’ve read in a while.

Who knew that in the 1800’s the British built a 12 foot high wall (giant thorny hedge really) across India to stop the smuggling of salt, opium, cannabis, sugar and who knows what else and —  wait for it — made the Indians pay for it.
By 1872, the Line had a staff of 14,000 people taking care of it!
The Wikipedia page on this ‘Inland Customs line’ is breathtaking.
In another truth-is-stranger-than-fiction detail, the engineer behind it was AO Hume, who also helped in later years to found the INC (probably when he came to his senses.)

Google, democracy and the truth about internet search

With the rise of bigoted right-wing mobs everywhere in the world, coinciding with 15 years of Online search engines, it’s worth asking these questions — how impartial should Google be to information?

For Google’s mechanical search algorithms, the answers to auto-suggested searches like ‘Are women evil’, ‘Are jews bad/are Muslims bad’ are all: *yes, and here are thousands of pages and videos that say so, some with ‘proof’ in the title*
If you ask ‘Was Hitler bad?’ you get on the top of the page, ’10 reasons why Hitler was one of the good guys’.
Digital tech massively empowers the ignorant as much as it spreads knowledge. Yet we know from TV and print about human nature, that sensationalized bad news attracts people more than informed good news.

Link: Google, democracy and the truth about internet search | Technology | The Guardian

Six Crypto-Currencies Approved for the AppStore

I have only a laypersons understanding of Bitcoin etc, but it seems Apple has a list of 6 ‘approved’ Crypto Currencies that ios apps can connect to. Really mind-boggling how far we’ve come so fast. Wasnt Bitcoin invented a few years ago?

p.s. The cryptocurrency guys are complaining “only 6?”. I’m like: There are more? Theres like ‘Dogecoin’ in that list, and it started as a joke!

Bitcoin, Dogecoin, Litecoin, Ethereum,
the DAO and Ripple

Source: These Are the Six Crypto-Currencies Approved by Apple – Rumor

Bricks from bacteria, not coal fire

How amazing is that – a brick hardened by Coral-like growth, not by fire in an oven for three days.
Imagine no more brick klins belching heat, smoke and co2, consuming coal. This is going to market in 2017!

 “I really wanted to pursue a different approach to how materials were made,” she says. “It just didn’t seem right for us to essentially extract material from the ground and then fire it with quite a large amount of fossil fuel just to make a hard product.”
“Our goal is to impact. It’s a global goal,” says Dosier. “We wanted to do what had never been done before, to push the boundaries. And instead of being ‘less bad,’ we wanted to completely redo it–the hard way.”

BioMason is a North Carolina startup company that manufactures bricks without heat or clay. About 8% of global carbon emissions come from making bricks, accor…

Source: Huge Cuts In Brick CO2 Emissions Coming From Startup BioMason