Adepoju Olusegun

Surgeon in training and picking up other life skills along to way.

[Dr. M.F. Khan @Dr_TheHistories]

And then, in January 2020, it happened. Christopher Havens published his first paper in a real, peer-reviewed academic journal, Research in Number Theory, as a co-author alongside professional mathematicians. His work revealed, for the first time, certain hidden regularities in the way a vast class of numbers can be approximated — a genuine, original contribution to human knowledge, produced from a prison cell.

And he didn't stop. More publications followed — work tied to a conference in Slovakia, several more academic papers, and even a 2025 textbook on continued fractions from a respected academic publisher. Havens has never set foot in Italy or Slovakia, the countries his collaborators call home. All of it was done by mail, by hand, from inside.

But here is the part that may matter most of all.

Christopher Havens didn't keep his second chance to himself. Realizing what mathematics had done for him, he began — informally, in 2016 — offering to teach math to his fellow inmates, in exchange for a little library access and meeting space. That small effort grew into something real: the Prison Mathematics Project, which he co-founded and which became an official nonprofit in 2020.

Today, that project connects incarcerated students all across the country with volunteer mathematicians and educators who mentor them by mail. In 2025 alone, it reported more than 350 active mentorship pairings nationwide. It runs "Math Circles" — group problem-solving sessions — inside correctional facilities in several states. Havens has even held a part-time university research position, working on problems connected to cryptography.

He has described his own goal for his years in prison simply: that he wants to come out the other side as a functioning, contributing member of society. And he has thrown himself into mentoring other incarcerated students, calling that work central to their rehabilitation — and to his own.

None of this erases what Christopher Havens did. A man died, and that fact remains. But his story is a powerful reminder of something we too easily forget: that a human being is never only the worst thing they've ever done. That the mind is capable of astonishing things, in the most unlikely of places. And that even in a locked cell, with nothing but a pencil and the will to try, a person can begin to rebuild — and even give something back to the world.

Some prisons hold the body. But it turns out there are some things — curiosity, discipline, the hunger to become better — that no wall can ever quite contain.

[Dr. Khaled @kh505043]

اليوم كنا نطبق في المستشفى مع الدكاترة وجاء مريض للعيادة ومعاه فحص مزرعه وكانت النتيجه صادمه (نفس الصورة الي موضحه امامكم ) كلنا انصدمنا من نتيجه الفحص 🤯🤯🤯
تقولوا ويش الحل ؟!
وين الدكاترة يفيدونا 💔

[Adepoju Olusegun @Adepoju_SegunK]

@uhd2020 Such a beautiful picture

However, it looks so much like an eye: cornea just above the iris

[Duchess of Bourdillon! @duchessmabboud]

I just graduated a few weeks ago. I was class rep all through my stay in UI Law so I knew nearly all my classmates on a personal note.

The ones who worked every last day just to feed and afford the basics.

The ones we had to crowdfund for.

The ones who were in and out of hospital and always called to take excuse because while we’re writing yet another test, they can’t make it because they are on a hospital bed for the umpteenth time that semester.

The ones who got overwhelmed and depressed.

The ones who lost family and/or friends and just couldn’t find their way back.

The family men and women who just had other responsibilities and cant give it as much time as the others.

And it goes on and on…

The most important thing I learnt from being class rep is not leadership or service. It is to give people grace when it comes to these things.

There are still those who do not care and just want to graduate with whatever but mehn, more than half the time, life happened and it takes different forms.

Leave people alone. Let them celebrate their 2:2 if they want. YOU DO NOT KNOW WHAT IT TOOK TO GET THERE!

And I really hope you never have to know.

[I am Ken @Ikennect]

How many can relate👇🏼😂

[Adepoju Olusegun @Adepoju_SegunK]

@realbig_shak Interested

[Sage of the Six Paths @DrJohnAfam]

One of the most striking ironies of our profession today is that the loudest and harshest critics of Nigerian doctors are not foreign observers, or even the government it is Nigerian doctors who have emigrated.

Sadly, their criticism rarely comes from a place of empathy or shared struggle. More often, it’s a condescending, “What you people are practising isn’t even medicine.”

If you're still practising in Nigeria, in this underfunded, overstretched, often demoralizing system, you need a mindset that shields you from all that noise and keeps you moving forward.

Here’s some advice that’s helped me, and may help you too:

[Adepoju Olusegun @Adepoju_SegunK]

@cooltechtipz @TweetHelperBot download this

[The Culturist @the_culturist_]

Every aspect of life is being stripped of color.

Many have noticed this trend — but why exactly is it happening?

Something deeper is going on… (thread) 🧵

[Sage of the Six Paths @DrJohnAfam]

Before you leave clinical medicine for a non-clinical role, here are 14 things you must know.

[DON “Tobechukwu” Ade 👑 @Row_Haastrup]

Rev. Isaac Omolehin was to a minister for 7 days in a 7-day crusade in the USA 🇺🇸 & only one person was in attendance.

On the first day, only one person attended the crusade.
The host considered canceling the crusade but since 1 person, a lady, attended the first day, they considered doing it on the 2nd day as well.

They asked her if she would come, she said she wasn’t sure.
This story is a really intriguing one, pls watch 👇

I pray for you that the mercy of God will locate you in this season.

[THAT IRISH & SHOE PLUG™ @SuperSlimEli]

😂😂😂😂😂😂 Please I'm calling on all Scientists out there, please make this machine possible. No need for DNA 😭
Just watch

[Adepoju Olusegun @Adepoju_SegunK]

@WhiteSoxic @StreamviDL download this

[Todd Jacob @thetoddjacob]

In 1808, a genius discovered why ambition destroys brilliant minds.

200 years later, this hidden pattern is destroying more lives than ever.

The trap is so subtle, even geniuses can't see it coming.

The dark truth about excellence: 🧵

[The_Bearded_Dr_Sina @the_beardedsina]

There's something called Phone call anxiety and some people have it.

When their phone rings they start to have palpitation, headache, uneasiness, tremor, anxiety.

They aren't proud , rude or ignoring your calls. Try & send a message.
Don't be a Trigger.

[Dylan Jardon 🌈 @DylanJardon]

"Perfection is impossible.

In the 1,526 singles matches I played in my career, I won almost 80% of those matches.

But what percentage of points did I win?

54%

In other words, even top ranked tennis players win barely more than half the points they play.

When you lose ever second point on average, you learn not to dwell on every shot.

You teach yourself to think:
'Okay, I double faulted...it's only a point.'
'Okay, I came to the net and I got passed again...it's only a point.'

Even a great shot, an overhead backhand smash that ends up on ESPN's top 10 playlist – that too is just a point.

Here's why I'm telling you this.

When you're playing a point, it has to be the most important thing in the world. And it is.

But when it's behind you, it's behind you.

This mindset is crucial – because it frees you to fully commit to the next point with intensity, clarity, and focus."

–@rogerfederer

[Adepoju Olusegun @Adepoju_SegunK]

@nathanielblow THANK YOU JESUS!

[The Cultural Tutor @culturaltutor]

You might not have seen it before, but this is the world's 4th tallest building.

It's the Makkah Clock Royal Tower, built ten years ago in Mecca, Saudi Arabia.

And it's not the only megastructure you probably haven't heard of...

[The Cultural Tutor @culturaltutor]

People sometimes wonder if we can no longer build those architectural wonders of the past.

We could — it's just that we don't want to.

Humanity will build whatever we think is most important, and right now that is hotels, offices, malls, and airports.

[Adepoju Olusegun @Adepoju_SegunK]

@olawalesmd Aang in the Avatar is so Badass. I will never forgive LOK for making that state look so weak.

BTW, Aang in S01E14faced a volcano without the Avatar State. Dude was badass! His only problems were his pacifist nature and inability to take hits