A company just launched an AI service that can publish hundreds of stock research reports a day — with one human overseeing the whole operation. Could the Wall Street analyst be the next job to disappear? In this episode, we follow two colleagues — a data scientist and an equity researcher — as they debate what AI really means for the people whose job is to think for a living. Along the way, you'll pick up five B2 expressions that belong in every serious English learner's toolkit.
⚡ 5 Key Expressions
Expression 01
Make obsolete
To cause something to become outdated, unnecessary, or no longer useful — usually because something better has replaced it. The word "obsolete" comes from Latin obsolescere, meaning to fall into disuse. When one thing makes another obsolete, there is a clear before-and-after: something that once had value now has none. You will hear this expression constantly in conversations about technology, business disruption, and career change. It works equally well with "render" as the verb — "rendered obsolete" is slightly more formal and very common in written English.
- "Streaming services have made the DVD rental industry completely obsolete."
- "I finally got a new laptop. My old one is officially obsolete."
Expression 02
Capitalize on
To take smart advantage of an opportunity, a situation, or a trend in order to benefit yourself or your organization. The key word is smart — capitalizing on something is not accidental. It implies that you recognized an opening and moved deliberately. The word comes from "capital" in the financial sense — you are turning a situation into something that pays off. In the dialogue, Maya argues that the smart move is to capitalize on AI before it turns the tables on you. The expression works for individuals, companies, and teams alike.
- "The brand capitalized on the viral moment by launching a limited-edition product the very next day."
- "She capitalized on her manager being in a great mood and asked for the time off she'd been putting off."
Expression 03
Wary of
Cautious, watchful, and not fully trusting of something or someone. To be wary of something is not the same as being afraid of it — it is more like keeping one eye open. You have not committed to distrust, but you have not let your guard down either. The word "wary" comes from Old English wær, meaning watchful or aware. It is a precise, sophisticated word that fits naturally into professional conversation. A key distinction: "worried about" is emotional — it describes anxiety. "Wary of" is strategic — it describes careful observation before committing.
- "Investors remain wary of the sector after two consecutive quarters of disappointing earnings."
- "I'm wary of signing anything before a lawyer looks at it — that clause feels off."
Expression 04
Flesh and blood
A real, living human being — as opposed to something artificial, mechanical, or digital. The phrase emphasizes the physical, human quality of a person: warm, imperfect, intuitive, and alive in a way that no machine can replicate. It appears in Shakespeare and has been in the language for centuries, which gives it a certain emotional weight. In the dialogue, Alex uses it to argue that a human analyst brings something beyond data — judgment, relationships, a gut feeling. The phrase has a second meaning in everyday English: "my own flesh and blood" means a biological family member.
- "After three weeks of chatbots and automated responses, it was a relief to finally speak to a flesh and blood person."
- "She hadn't seen her brother in ten years — her own flesh and blood, and they'd become strangers."
Expression 05
Remains to be seen
Used to say that something is uncertain and that only time will reveal the answer. It is a measured, intelligent-sounding way of acknowledging that nobody knows yet — without sounding evasive or uninformed. The structure is almost always: it remains to be seen whether… or a standalone that remains to be seen in response to a claim. In professional settings, this phrase signals that you are not jumping to conclusions — a quality that tends to earn respect. Maya closes the dialogue with it, and the choice is deliberate: she is making a strong argument while leaving just enough room for doubt.
- "The policy has been announced, but whether it will actually reduce costs remains to be seen."
- "'I think we'll hit the target this quarter.' — 'That remains to be seen. Last quarter we said the same thing.'"
🎭 The Dialogue: The Human Factor
Maya is a data scientist and Alex works in equity research — the kind of job that involves reading markets, writing reports, and making sense of financial noise for clients. They are grabbing coffee before a morning meeting, and the conversation takes a turn neither of them was quite ready for.
📍 Office kitchen, Tuesday morning. Maya is by the coffee machine. Alex walks in looking like he has something on his mind.
Maya: Did you see that piece about AI writing research reports for retail investors? They're saying one person can oversee hundreds of notes a day.
Alex: I saw it. Honestly, I'm not sure if I should be impressed or start updating my résumé. Tools like that could make my entire job obsolete.
Maya: I mean, the smart move is to capitalize on it before it capitalizes on you. Use the tools, don't compete with them.
Alex: Easy to say. But clients want someone they can call. They're still pretty wary of trusting a machine with their life savings.
Maya: Sure, but are they wary of trusting a machine that's been trained on every earnings call from the last twenty years and never gets emotional?
Alex: That's the thing — a flesh and blood analyst brings intuition, relationships, experience you can't just scrape from a database.
Maya: Maybe. But whether that's worth a six-figure salary in five years — that really remains to be seen.
Alex: I know. I just think the best outcome is human plus machine, not human versus machine.
🧠 Episode Quiz
Can you answer this?
Wall Street is one of the most famous streets in the world. But why is it actually called Wall Street?
- A — It was built along a wooden wall that Dutch settlers constructed to protect their colony in the 1600s.
- B — The first stock exchange was inside a building with a distinctive wall-shaped facade.
- C — It was named after a banker named Thomas Wall who founded the financial district in the 1700s.
✅ Answer: A — In the 1600s, Dutch colonists built a wooden wall at the northern edge of their settlement — what is now Lower Manhattan — to protect against British and Native American attacks. The road running alongside it became known as Wall Street. The wall came down in 1699, but the name stuck, and a few centuries later the world's most powerful financial market grew up right on top of it.
📚 Bonus Vocabulary
Retail investor (noun phrase) — an individual, non-professional investor who buys and sells securities for their own personal account, as opposed to a large institution like a bank or fund. Alex and Maya's conversation centers on a product built specifically for this group. "Retail investors flooded into the market during the pandemic, many trading for the first time through apps on their phones."
Gut feeling (noun phrase) — an instinctive sense or intuition about something, based on experience rather than hard data. Alex invokes it as one of the things AI cannot replicate. "The numbers looked fine, but he had a gut feeling something was off — and he was right."
Human overlay (noun phrase) — a layer of human judgment, review, or decision-making placed on top of an automated or AI-driven process. This is the term the product's strategist uses to describe his own role: not replacing the AI, but reviewing and approving what it produces. "The system runs automatically, but there's always a human overlay before anything goes live."
