Improving Legacy Software: How Much Better Does it Have to Be?
Summary
Feature improvements to software that has been around for while often results in frustration for the users because of resistance to change. Even if the new experiences are proven to be better, old habits and biases interrupt adoption speed. In this talk, Paula will explore strategies for proving out where legacy software needs improvement and where research can guide and debunk myths about legacy software and legacy users.
Key Insights
-
•
Legacy habit paths form over years and become deeply ingrained through frequent and complex workflows.
-
•
Breaking established habit paths in software can cause cognitive overload and reduce productivity.
-
•
Windows settings navigation evolved through nine different habit paths over 27 years, with some changes improving and others worsening user experience.
-
•
Measuring before-and-after effects on habit paths is crucial to determine if a change is better, worse, or the same for users.
-
•
Multiple methods exist to evaluate habit disruption, including time on task, cognitive load, emotion tracking, and telemetry.
-
•
Telemetry is often missing or insufficient for tracking habit paths, requiring manual analysis or enhanced tooling.
-
•
Smaller user bases, such as enterprise teams with fewer than 20 users, have an advantage in deeply understanding and managing habit formation.
-
•
Different user populations may face varying levels of pain when habit paths change, making user segmentation critical in design decisions.
-
•
Consistency must be balanced between respecting legacy habits and aligning with newer interaction patterns from other platforms.
-
•
There is an opportunity for the industry to collaboratively track common habit paths to unify user experiences across products.
Notable Quotes
"People form habits on software that become efficient, so they naturally resist changes that force new habits."
"Breaking a habit path can cause users to repeatedly retry workflows, leading to frustration and cognitive overload."
"From 1995 to 2012, Windows users had a consistent start button habit path to reach settings; Windows 8 broke that 15-year habit."
"If we don’t respect legacy habits, we risk interrupting workflows and causing users to have a bad day."
"Measuring changes before and after is key because you can’t know the impact without a baseline."
"Collecting habit path data in every study over time builds a data set that informs product decisions."
"In the small enterprise user base scenario, you can get down and dirty to know exactly how people use the software and how habit changes will affect them."
"Consistency with legacy habits versus new platforms depends on knowing your audience and the likelihood of pain from breaking habits."
"Breaking habits for new users, such as Mac users switching to Windows, requires mapping mental models carefully to reduce pain."
"Habit changes sometimes must happen, but measuring and designing to respect them avoids mortifying changes."
Or choose a question:
More Videos
"Community-rooted wisdom like the Mexican 'guana' practice reduces postpartum depression without traditional research."
Victor UdoewaBeyond Methods and Diversity: The Roots of Inclusion
March 26, 2024
"When you’re in a culture that celebrates complexity, making things simple is still a very hard thing to do."
Peter MorvilleThe Architecture of Understanding
May 13, 2015
"Some of the most mundane objects can signal change."
Sam LadnerHow Research Can Drive Strategic Foresight
March 9, 2022
"AI can help us cut through noise and speed up the so-what part of insights but can’t replace human knowledge of strategy and customers."
Michelle Bejian Lotia Anne-Marie MorellRolling Out a Repository: How Zapier Centralizes Insights from Across their Organization
March 28, 2023
"Ratios always start on the premise of spreading people too thin, which is not a great way to get success."
Leisa ReicheltOpening Keynote: Operating in Context
November 7, 2018
"What if I said that this was actually the assignment: to write an essay using AI, helping students become familiar with translating their policy intent through AI?"
Sarah GallimoreInspire Progress with Artifacts from the Future
November 18, 2022
"The secondary first, primary second sequence may seem a numerical mismatch, but it is the way to go."
Joerg Beringer Thomas GeisScaling User Research with AI: Continuous Discovery of User Needs in Minutes
September 10, 2025
"It’s not enough to have great people; you need to create the space that brings out the best in them."
Peter MerholzCustomer-Centered Design Organizations
June 8, 2017
"Telling the right story means creating a memorable shorthand that leaders can reference when they're at other tables."
Dalia El-ShimySo You've Got a Seat at the Table. Now What?
March 31, 2020
