Ep 152: Why Relying on Data Can Cause More Harm Than Good

Ep 152: Why Relying on Data Can Cause More Harm Than Good

Cathy O’Neil is a mathematician who has worked as a professor, hedge-fund analyst and data scientist. Cathy founded ORCAA, an algorithmic auditing company, and is the author of Weapons of Math Destruction.

Cathy says she was always a math nerd. She loves the beauty of mathematics, and says it is almost an art – the cleanliness of it. One of her favorite things is that math is the same no matter what country you go to. She also had had an interest in the business world, which led her from academia to work as a hedge fund quantitative analyst.

Big Data is both a technical and marketing term. The technical term depends on the technology you are using. Big data used to mean that it was more data than you could fit on your computer – now it means more that you can perform in a simple way – that it needs to be put it into another form before it can be used.

The marketing term, ‘big data’ is misleading. However, it represents the belief that you can collect data for one thing but then the same data can be used for another purpose. “It is a technology that allows us to collect seemly innocuous data and use it for another purpose.”

One profession in which O’Neil has at looked at the use of big data and algorithms in detail – and discusses in her book – is teaching and their evaluations. She says there were teacher evaluation algorithms originally designed to eliminate the achievement gap between ‘rich kids and poor kids’. Eventually, a new system was devised entitled, ‘value added teacher model’.

The idea of this new system intended to offset the previous way of looking at assessing teachers - where they solely looked at the teacher’s students’ final test scores.

The ‘value added score’ system holds teachers accountable for the difference between students’ final score and what they were expected to achieve/receive.

O’Neil says that this method ‘sounds good’ and seems to ‘make sense’. However, with only 25 (or so) students in one teacher’s classroom, there is not enough data. Additionally, both the expected and actual scores have a lot of uncertainty around each of them. So this final number ‘ends up not much better than a random number’. With that, there is not enough credible data to base important decisions such as terminating a teacher’s job.

One of O’Neil’s main points in today’s discussion is that every algorithm is subjective. Whether it is used to evaluate teachers, hire or fire employees in a financial organization - people should know that they have the right to ask the algorithm explained to them. The 14th Amendment provides them ‘due process’ to ask why they are terminated, not promoted, etc. - other than just alluding to a algorithm result.

What you will learn in this episode:

  • What is ‘weaponized math’?
  • How is the internet building a new kind of ‘class’?
  • What are the 2 definitions of ‘big data’?
  • The potential bias found in the use of algorithms in teacher evaluations, hiring practices, firing

Avsnitt(1052)

Sparks: Blessing, Curse, or Both: How Vulnerability Can Be a Liability and How to Turn It Into an Asset

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4 Apr 5min

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The way we work, lead, and define success is evolving faster than ever. AI is transforming industries, the office is being reimagined, and the old definition of success—chasing money and titles—is being challenged. So what does this mean for you as a leader? In this special episode of the Future Leader Podcast, we’re bringing together the most game-changing conversations from Q1 2025. Martin Ford, futurist and best-selling author, unpacks how AI is reshaping jobs, businesses, and leadership. Jordan Goldstein and Elizabeth Brink, co-CEOs of Gensler, reveal how workplace design fuels creativity, culture, and sustainability in the hybrid era, and what the office of the future looks like. Sahil Bloom, author and entrepreneur, challenges the traditional view of success, introducing a new framework for wealth—time, relationships, health, mental clarity, and financial stability. The future of leadership isn’t coming, it’s already here. This episode is your chance to get ahead of the curve. Learn all the skills you need to lead in the future of work.   ________________ Start your day with the world’s top leaders by joining thousands of others at Great Leadership on Substack. Just enter your email: ⁠⁠https://greatleadership.substack.com/

31 Mars 52min

Sparks: Think Beyond Borders: How to Cultivate a Global Citizen Mindset With Solvay CEO Ilham Kadri

Sparks: Think Beyond Borders: How to Cultivate a Global Citizen Mindset With Solvay CEO Ilham Kadri

Every great leader knows that the world is bigger than your comfort zone. They don’t just surround themselves with people who think like them. They seek out different perspectives, challenge their own assumptions, and learn to see through a global lens. That’s the Global Citizen Mindset, and in today’s world, it can be your competitive edge. In today's Leadership Spark, we explore how thinking beyond borders makes you a stronger leader, with insights from Ilham Kadri, CEO of Solvay, whose journey proves that real leadership isn’t about where you come from—it’s about how far you’re willing to see. Learn why leaders who think globally make better decisions, solve complex problems, and navigate uncertainty with confidence.   ________________ Start your day with the world’s top leaders by joining thousands of others at Great Leadership on Substack. Just enter your email: ⁠⁠https://greatleadership.substack.com/

28 Mars 6min

Bestselling Author Reveals How The World’s Best Investors Think & Why Leaders Need to Pay Attention!

Bestselling Author Reveals How The World’s Best Investors Think & Why Leaders Need to Pay Attention!

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24 Mars 59min

Sparks: Three Strategies That Help Your Career and Why Usual Career Advice Do Not

Sparks: Three Strategies That Help Your Career and Why Usual Career Advice Do Not

Most career advice is useless. "Follow your passion." "Wait for the right opportunity." "Success happens when you get lucky." These are some of the most common (and misleading) career clichés. And if you’ve been following them, you might be stuck waiting instead of building. In today’s Leadership Spark, I’m sharing three unconventional strategies that completely changed my career and helped me build a life on my own terms. First, learning how to learn is the single most important skill you can develop—waiting for someone else to teach you what you need will keep you stuck. Second, "fake it till you make it" isn’t about pretending—it’s about rewiring your mindset so you can step into opportunities before you feel ready. And finally, chasing passion is one of the biggest career mistakes people make. Passion isn’t something you find—it’s something you bring into what you do. These three shifts changed everything for me. They’ll do the same for you. Listen now.   ________________ Start your day with the world’s top leaders by joining thousands of others at Great Leadership on Substack. Just enter your email: ⁠⁠https://greatleadership.substack.com/

21 Mars 10min

Betterworks CEO Doug Dennerline on Why Annual Performance Reviews Are Broken

Betterworks CEO Doug Dennerline on Why Annual Performance Reviews Are Broken

Traditional performance reviews are broken—outdated, ineffective, and dreaded by employees and managers alike. Many companies scrapped them, only to bring them back in new forms. Why? What’s really driving employee disengagement? And how can AI help leaders make smarter, unbiased decisions about performance, promotions, and career growth? In today’s episode, Doug Dennerline, CEO of Betterworks, breaks down the new performance management approach replacing outdated annual reviews, and why companies are rethinking performance tracking. We also unpack how AI is transforming feedback, goal-setting, and leadership to make smarter people decisions. Hear Doug’s take on the future of hybrid work and what most managers get wrong about employee engagement. Finally, we cover how HR’s role is evolving into a strategic force in the future of work. If you lead a team, manage performance, or want to future-proof your leadership, this is a conversation you can’t afford to miss. This episode is sponsored by Betterworks If you’re ready to move from managing performance to shaping the future, EmpowerHR 2025 is where it begins. This exclusive event, hosted by Betterworks, is bringing together top HR innovators to share breakthrough strategies in performance management on March 20th. Save your spot at empowerhr.betterworks.com.  ________________ Start your day with the world’s top leaders by joining thousands of others at Great Leadership on Substack. Just enter your email: ⁠⁠https://greatleadership.substack.com/

17 Mars 51min

Sparks: Vulnerable Leadership: Revealing the Secret Formula to Any Leader’s Success

Sparks: Vulnerable Leadership: Revealing the Secret Formula to Any Leader’s Success

Vulnerability alone WON’T make you a great leader. Yes, vulnerability is key to trust and connection. Leaders are told to be open, admit mistakes, and be authentic. But vulnerability without leadership can backfire. Imagine a CEO addressing their company during a crisis. They acknowledge the struggles, admit uncertainty, and… stop there. No vision. No direction. Just uncertainty. That’s not leadership. That’s fear without a plan. In today’s Leadership Spark, we explore what separates vulnerability that builds trust from vulnerability that erodes confidence. You’ll discover the real formula for impactful leadership: Vulnerability + Leadership = Trust & Competence. Hear real-world examples of leaders who got it right and those who didn’t. If you’ve ever wondered how to be authentic while still inspiring confidence, this episode is for you. ________________ Start your day with the world’s top leaders by joining thousands of others at Great Leadership on Substack. Just enter your email: ⁠⁠https://greatleadership.substack.com/

14 Mars 10min

Is AI Taking Over The World? Not So Fast! - Chief AI Officer of PwC US, Dan Priest

Is AI Taking Over The World? Not So Fast! - Chief AI Officer of PwC US, Dan Priest

AI is moving faster than most leaders can keep up. If you’re not leveraging it, you’re already behind. But AI adoption isn’t as simple as plugging in new tech. While some companies are already using it to outpace competitors, others are stuck in analysis paralysis—unsure how to implement AI without opening themselves up to risk. If you want to lead in this AI-driven world, you can’t afford to wait. In this episode, Dan Priest, US Chief AI Officer of PwC, breaks down the biggest AI shifts happening right now and the strategies leaders need to stay ahead. You’ll learn why AI has moved from a technical tool to a business strategy driver, how companies can avoid the biggest AI adoption mistakes, the critical role of responsible AI governance, and why understanding AI’s human impact is just as important as its technical capabilities. ________________ Start your day with the world’s top leaders by joining thousands of others at Great Leadership on Substack. Just enter your email: ⁠⁠https://greatleadership.substack.com/

10 Mars 55min

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