HP has named Emma Walmsley, the former CEO of GSK, as its next chief executive — a leader who has never run a computer manufacturer and whose 17-year formative career was spent at L'Oréal, selling beauty products. On November 4, the company confirmed she will take over on January 4, 2027.

For practitioners, the signal is clear: HP's board has chosen pattern recognition over domain pedigree. Walmsley is not a stranger to technology — she has sat on Microsoft's board for seven years — but she has never operated a hardware business, and HP makes computers and printers.

That gap is the argument. Organizational systems consultant Tony Manganiello, writing on the appointment, contends the unconventional choice fits a pattern: some of corporate America's most memorable turnarounds were led by executives recruited from outside their new industries. "Great leaders don't know everything," Manganiello writes. "They know whom to ask."

Which outsider turnarounds set the precedent?

The record HP is effectively invoking runs through three names:

• Lou Gerstner, who arrived at IBM from RJR Nabisco and took over in 1993, when the company was, in Manganiello's words, "in deep trouble."
• Alan Mulally, who left Boeing to lead Ford.
• Hubert Joly, who joined Best Buy from the travel and hospitality business.

Their challenges differed, Manganiello argues, but their experience points to three operating principles he has applied in his own business. He frames them as C.I.A.: Challenge assumptions. Investigate the reality. Activate the talent.

What does challenging assumptions look like in practice?

Gerstner's IBM is the canonical case. When he took the helm in 1993, one proposed solution was to break IBM into smaller businesses — a clean, structural answer to a company in decline.

Gerstner questioned whether that was really the answer. He saw something others were overlooking: customers needed help getting different technologies to work together. Keeping IBM intact would let it provide that integration, rather than forcing customers to piece together solutions from separate companies.

The decision inverted the conventional logic of the moment. Instead of shrinking to survive, IBM stayed whole and sold the connective tissue its customers could not buy anywhere else.

Why does this matter for HP's next chapter?

The Gerstner comparison is instructive rather than predictive. HP, like 1993-era IBM, faces a question about what its customers actually need and which internal assumptions deserve to survive a leadership transition.

Walmsley's résumé suggests the board wants those assumptions tested. Seventeen years at L'Oréal taught her consumer brands and distribution; the GSK years taught her regulated, scaled, global operations; seven years on Microsoft's board kept her inside the technology conversation without making her captive to its orthodoxies.

Outsiders succeed, on Manganiello's reading, because they arrive without the habits that incumbents mistake for knowledge. The insider knows how things have always been done. The outsider knows to ask why — and, crucially, whom to ask.

The remaining two legs of the framework — investigating the reality and activating the talent — are where an incoming CEO spends her first months. Walmsley takes the HP job on January 4, 2027, and the market will watch for the Gerstner move: the moment she either accepts the inherited strategy or breaks the company's assumptions apart the way Gerstner declined to break up IBM.

The precedent says the outsider's advantage is real. It also says it expires quickly. Gerstner had a failing enterprise and a clear integration insight; Walmsley will need to find HP's equivalent, and the clock starts in January 2027.