Harmony Breeds Life, Sameness Does Not: Notes on a Japanese DEI Episode and the Cost of Homogeneity
Listening notes on Investor's Sunday, 2026-09-20: twenty-five years of DEI in Japanese companies, why opinion diversity is harder than headcount ratios, and whether investors should watch the board or the executive officer tier. Educational, not investment advice.
Contents
Harmony breeds life; sameness does not continue. To balance one thing with another is called harmony, and so things flourish and gather to it. But to add sameness to sameness — when it is used up, it is discarded.
—— Guoyu, Discourses of Zheng (pre-Qin, attributed to Shi Bo; translation mine)
What the episode covers
On the 20 September 2026 broadcast of Investor’s Sunday, hosts Rie Murayama and Yuko Ezure had on Masako Aragane, head of Qualia Inc. and a consultant on DEI (diversity, equity, inclusion). Murayama spent years at Goldman Sachs and was inside the firm in 2001 when then-CEO Hank Paulson launched its diversity push himself, while Aragane first ran into the word in 1996 and has spent more than two decades walking alongside Japanese companies on it. So they spend very little time on theory. Most of the conversation is about how Japanese firms got pushed down this road over twenty-five years, and where the road stalls today.
The main points
For the first twenty years the pressure came from outside. Aragane lays out the timeline: foreign firms started around 2001, study groups formed in Tokyo in 2003 and in the Kansai region in 2004, work-life balance arrived around 2007, Abe’s policy package pushed women’s participation again in 2013, and legislation followed in 2016. Up to that point most companies were doing it because the law said so, and only around 2020 did firms begin saying out loud that this could be converted into competitive advantage.
She quotes an American consultant: this is a journey with no end. Once you start you cannot stop; stop and you slide backwards; keep going and new problems appear. The consultant asked her back then whether she was prepared to do it for life. When I set that against the Japanese corporate habit of wrapping a programme up after three or five years, it goes a long way to explaining why so much effort produced so little.
Of the four conditions she names, the one companies skip is skill. Headcount, awareness of unconscious bias, and time all get discussed, but her fourth is training in facilitation (running a meeting so everyone gets a turn to speak), conflict management, and assertive communication. She puts it bluntly: many firms that announce a DEI programme have connected it to none of these. And if you bring in more kinds of people without a method for getting their words out, diversity just reads as friction.
Headcount is itself a variable. She describes a company president about to address three hundred women employees. He was so rattled that every murmur from the floor made him wonder what he had said wrong, and he was still shaken back in his office. He normally works surrounded by men like himself, so that day was his first taste of being the minority. Murayama adds a matching story: after a session with thirty Japanese women employees, Paulson told them, so this is what you sit in every day, thank you for letting me feel it. Both hosts confirm the same pattern from their own board seats. With one woman in the room, her view gets filed as “the woman’s view”; with three or more, the room changes.
The goal is diversity of opinion; attributes are only the floor. Aragane separates her own work from advocacy built around a single attribute like gender or disability. Raising the number of women and making disability employment stick is groundwork, but what has been missing is drawing out what those people think, getting it said, and feeding it into decisions. Only in recent years, she says, have firms started looking at that layer.
Her own method is to come in through the back door. Argue diversity head-on and the majority is forced to confront the advantage it holds, so the defences go up. Instead she talks about facilitation that makes discussion move, about logical thinking that keeps bias out of judgement, about retention and recruiting. By the end, the people who never spoke are speaking, and that is diversity doing its job. What I like about this is that nobody has to admit to an advantage before they get to enjoy the benefit.
Murayama says something plain to investors. Board-level female representation has been pushed up by rules and market pressure, but most of those seats are outside directors, hers included. So she wants institutional investors to move their gaze to the executive officer tier (the senior managers under the board who actually run the business) and to department heads. Until that layer shifts, the company has not shifted. She cites Canon’s 2023 AGM, where the president’s approval came in at 50.59%, as a marker of how much harder the market had started to look.
Going further
”Does a governance metric like this connect to the share price at all?”
My first reaction to the board-ratio section was doubt. Once a metric is written into regulation and scorecards, it gets optimised before it gets realised. The conversation offers a usable cut: split governance metrics into the required and the chosen.
The required ones produce clean numbers with little information: board gender ratio, disclosure page count, whether a policy document exists. The chosen ones are costly, unforced, and score nothing in the short run: the makeup of the executive officer tier, the promotion path through middle management, whether something as unglamorous as facilitation training got budget.
That is the same test we apply elsewhere. What a company spends money on says more about its priorities than what it puts in a report. So next time I open an annual report I plan to skip the handsome figures in the diversity chapter and go to the executive officer roster and the last three years of promotion announcements. Whether the names changed is the more honest disclosure.
”Where do you look for the risk that never shows up in the financials?”
Aragane draws out a case that made me stop the tape. Murayama once took over a restructuring where creditors had written off debt. Investigating the failed projects during her first hundred days, she kept getting the same answer: everyone thought it looked wrong from the start. So why did nobody say so? Because it could not be said. The proposal came from a former boss who had looked after them, and the meeting held no room for it.
None of that appears on a statement. Its cost settles in one lump: invisible day to day, arriving all at once, and the size of it equals the sum of the questions nobody asked out loud.
How do you hunt for traces? A few angles I have tried, none of them conclusive, all of them cheap. The Q&A portion of an earnings call is one: when an executive is handed an unflattering number, someone who takes the question apart and someone who slides off it are usually operating inside different internal weather. Another is the public record of departures and internal whistleblowing. Aragane notes that a higher share of whistleblowers are women, which she attributes to a sharper antenna for unfairness. Whether that attribution holds or not, the fact that someone was willing to say the thing is itself a signal that the organisation can still correct itself.
”We changed the rules, so why has nothing moved?”
I kept applying Aragane’s four conditions to myself. Headcount, awareness, skill, time — miss one and the spend on the other three evaporates. People hired without enough peers go quiet, quiet people without a method never get the words out, and words that take three years to show results get the programme cancelled.
The structure is not confined to companies. Anyone making investment decisions has a bubble of their own: the accounts they follow, the outlets they read, the friends they ask, mostly landing where they already landed. I have done it. On one position I was bullish on, not a single item in the folder of supporting material argued the other side, and I only noticed after it fell. What was missing was a method and the time to let the opposing case in.
The Daikin example fits here. Aragane heard that company’s president discuss the 2025 problem back in 2000: the wave of late-stage elderly, the collapse in the working-age population, and his point that waiting until the year itself would be too late, so move now. Something discussed twenty-five years ago came due this year. She then relays another executive’s line: you do diversity to create change, not to catch up with it or adapt to it.
Worth a look
- Investor’s Sunday, 20 September 2026 (InterFM; DJs Rie Murayama and Yuko Ezure, guest Masako Aragane); Aragane continues next week
- The World Economic Forum Global Gender Gap Report — the source behind the episode’s point about Japan trailing most African countries
- Matthew Syed, Rebel Ideas (published in Japanese as The Science of Diversity) — the episode notes how many Japanese executives have read it in the last few years
- Japan’s Act on the Promotion of Women’s Active Engagement (in force from 2016) and the published action plans companies file under it
The One Thing to Take Away
The judgement error that cost you most was probably spotted by someone at the time, who then could not say it out loud. When Murayama dug into those failed projects, everyone had thought it looked wrong from the start. The information was in the room, but there was no path for it to get out. So the path is what needs repairing; there was already enough information.
Here is something I have tried that costs one sentence. In the next group conversation you sit in — a work meeting, a family dinner, a group chat — find the person who has not spoken once, and ask them directly what they make of it. Then shut up and count to three without filling in for them.
Three seconds is long. You will want to fill it. Fill it and the answer is gone.
This article is an educational discussion of investment method. It is not advice to buy or sell any individual security, offers no target prices, and does not analyze any current holding. Investing carries risk; make your own decisions or consult a qualified professional.