A mathematician pulls a volunteer from the audience and tells them to corrupt his data on purpose. Then he finds every flipped bit.
This is Marcus du Sautoy at the Royal Institution, 4 minutes on error-correcting codes. A grid of 0s and 1s on the screen and a live demonstration of how a machine catches a single flipped digit.
The math is Hamming's. Every hard drive, satellite link, QR code, and model checkpoint transferred between GPUs depends on it working silently.
Watch the moment the volunteer changes 1 bit and he locates it without being told where. No equations shown. The trick is the parity structure underneath.
A backend engineer I know sent it to a junior who kept asking why checksums exist and closed the question in 4 minutes.
Free on YouTube, Royal Institution stage, subtitles on.
The bits flip constantly. You just never see it happen.
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The facts are that General Khumalo was charged by IDAC after a referral from Fadiel Adams in November of 2024 for an HR matter.
The facts are that General Fannie Masemola was charged by IDAC for a PFMA breach as the head of SAPS.
The facts are that the following have not been charged by IDAC
1. General Shadrack Sibiya - impala winner
2. General Molefe Fani - bid chairperson
3. General Richard Shibiri - loan winner
4. Sgt Nkosi - multiple linkages
5. Brigadier Nkwatshu - delivered tracksuits to Katiso Molefe attempted to collect Molefe dockets.
6. Brigadier Julius Mkhwanazi - Blue lights.
The facts are clear. The conclusions and connections contested.
@MediaZaban865 Shamila batohi told Nkabinde Enquiry that she doesn't read dockets and she relies on those she delegates her powers to.
Similarly the National Commissioner can't be expected to familiarise himself with all procurement processes happening at SAPS!
Iraq has some of the world’s largest oil reserves but the money it earns doesn’t fully flow through Baghdad. Instead, a system set up after the US invasion in 2003 still gives Washington lasting leverage over Iraq's oil revenues.
Al Jazeera’s Osama bin Javaid explains.
Nkosi spent the whole of last week denying everything a d saying he had forgot.
Today they brought our the whole whatsapp chat archive the he thought he deleted and he almost died of shock live on camera 😂😂😂
No amount of money can get you a flight out of Dubai right now.
Or Doha. Or Bahrain. Or Kuwait.
The richest cities on earth - and you can't leave.
Money buys you options. It doesn't buy you exits.
The world changed overnight. Again.
The boy who was being bullied at school reported the incidents to his teachers, but the bullying continued. He then decided to visit the nearest police station to file a case against his bullies and documented everything. His goal was not only to ensure transparency but also to encourage others who face daily bullying to use the law to stand up for themselves. We want to commend the boy for his courage and thank the hardworking members of the @SAPoliceService for their prompt response to this matter. We love you, boy. ❤️👏🏾👏🏾
One of the most effective tools of oppressive systems in Africa, including in bodies like CAF, is delayed justice.
You are told: don’t protest, follow procedure, file a complaint.
But by the time the process ends, the outcome has already taken effect.
We see it in football.
During the Senegal incident, some people are arguing teams should play on and complain later.
Yet trophies are awarded before any ruling arrives, and there is no replay.
We see the same pattern in politics and elections.
Go to court, people are told.
By the time judgment comes, power has already settled.
This is not a failure of systems.
It is how corrupt systems protect themselves .
Delayed justice creates the appearance of order while denying real accountability.
Many Africans have seen this pattern play out.
You probably have an example.