"Look, Mike," Tomas said. "I can hand off my code today and call it 'feature complete', but I've probably got three weeks of cleanup work to do once I hand it off." Mike asked what Tomas meant by "cleanup." "I haven't gotten the company logo to show up on every page, and I haven't gotten the agent's name and phone number to print on the bottom of every page. It's little stuff like that. All of the important stuff works fine. I'm 99-percent done."
As that old software proverb goes, the first ninety percent of the task takes ninety percent of the time, and the last ten percent takes the other ninety percent.
The Classic Mistakes case study is unnerving to read; it's like those staged re-enactments you see on America's Most Wanted. It's an exaggerated but strangely accurate summary of every pathological software project I've ever participated in, which is to say almost all of them.
This is the phenomenon McConnell likens to Gilligan's Island. Every week there's some new, crazy scheme to escape the island, but at the end of the episode, the castaways always end up stuck on the island for yet another week.
If you don't immediately see the parallels with software development, allow me to reacquaint you with the long, dismal history of software project failure. Classic mistakes are classic because they're so seductive. You have to actively recognize when you're falling into one of these traps. As Steve once said in an interview:
Actually succeeding in a software project depends a whole lot less on not doing a few things wrong but on doing almost everything right.
Uncontrolled problem employees
Adding people to a late project
Noisy, crowded offices
Friction between developers and customers
Lack of effective project sponsorship
Lack of stakeholder buy-in
Lack of user input
Politics placed over substance
Overly optimistic schedules
Insufficient risk management
Abandonment of planning under pressure
Wasted time during the fuzzy front end
Shortchanged upstream activities
Shortchanged quality assurance
Insufficient management controls
Premature or too frequent convergence
Omitting necessary tasks from estimates
Planning to catch up later
Push me, pull me negotiation
Overestimated savings from new tools or methods
Switching tools in the middle of a project
Lack of automated source control
I've increasingly come to believe the only difference between experienced and inexperienced software developers is that the experienced ones realize when they're making mistakes. The same rule applies to software projects and project managers. If you're not actively scanning through the list of Classic Software Development Mistakes as you run your software project, you have no idea how likely it is you're making one of these mistakes right now.
Making mistakes is inevitable, but repeating the same ones over and over doesn't have to be. You should endeavor to make all-new, spectacular, never-seen-before mistakes. To that end, Steve McConnell highlighted a few new classic mistakes in his blog that he's about to add to the canon, 10 years later:
- Confusing estimates with targets
- Excessive multi-tasking
- Assuming global development has a negligible impact on total effort
- Unclear project vision
- Trusting the map more than the terrain
- Outsourcing to reduce cost
- Letting a team go dark (replaces the previous "lack of management controls")
It's true, the odds are against you. But it's a good idea to periodically remind yourself that maybe, just maybe – if you can avoid making the same classic mistakes as so many other software projects before you – you might actually manage to escape from the island one of these days.