Yagni A Definition by Martin Fowler martinfowler.com Yagni originally is an acronym that stands for "You Aren't Gonna Need It". It is a mantra from Extreme Programming that's often used generally in agile software teams. It's a statement that some capability we presume our software needs in the future should not be built now because "you aren't gonna need it". A late change in requirements is a competitive advantageRequirements proliferation softwareagilefeaturesplanning
The State of Agile Software in 2018 A Talk by Martin Fowler martinfowler.com On the surface, the world of agile software development is bright, since it is now mainstream. But the reality is troubling, because much of what is done is faux-agile, disregarding agile's values and principles. The three main challenges we should focus on are: fighting the Agile Industrial Complex and its habit of imposing process upon teams, raising the importance of technical excellence, and organizing our teams around products (rather than projects). How we can do betterTaylorism in software A late change in requirements is a competitive advantageMake the change easy agilesoftware
Deadlines are bullshit An Article contrariantruth.substack.com In software development deadlines are a necessary evil. It is important to understand when they are necessary, and it is important to understand why they are evil. External vs. internal deadlinesWhy are internal deadlines evil?Engineers who love their work Hofstadter's LawThe Thing-deadline calculusNever enough timeDriving engineers to an arbitrary date is a value destroying mistake bureaucracysoftwareprocesswork
External vs. internal deadlines When are deadlines necessary? Contractual obligations Technical liabilities (e.g., dependency EOL) Compliance, government, investors, and other external stakeholders What do all of these deadlines have in common? They are all important. They are all deadlines that cannot be missed. They are all external. When are deadlines evil? Your manager says you have a deadline Your software development methodology says you have deadlines What do all of these deadlines have in common? None of them are important. They are arbitrary. They are all internal. They are all bullshit.
Why are internal deadlines evil? Estimation: When estimating engineering work a substantial time investment is required by an engineer in order to get an accurate estimate. Misaligned Incentives: There is an incentive to lie and give estimates much longer than the feature is truly expected to take. Low Morale: Deadlines are likely to be missed often. Repeated failure has a cost to the morale of the team. Micromanagement: Deadlines are wielded by middle managers as a whip to harass and annoy engineers working on features. High Stress: When engineers feel the pressure of other stakeholders holding deadlines over their heads it creates an environment of high stress. High Turnover: On teams with high turnover rates the best engineers have an easy time finding new work and leave quickly, the worst engineers have a difficult time finding work and remain. This selects for a lower quality team over time.
Engineers who love their work The resolution is simple. Never have internal deadlines. Operate on a prioritized and ordered list of features. Estimate only when necessary to prioritize and do so in a t-shirt sizing way. Trust your engineers and they will begin to love their work. Engineers who love their work are happy and productive. Building is never a straight line