The 90/10 Rule: Why the Final Stretch is Often the Toughest (2024)

Any seasoned engineering manager is likely all too familiar with the 90/10 rule. This development hurdle is one that often plagues projects, and it doesn't matter what type of device you're creating.

Without good project management, crossing the finish line might seem impossible. So, what is the 90/10 rule?

In simple terms, it's the concept that 90% of the work needed to finish your project will take a mere 10% of the time. But that final 10% push to reach the end? It will eat up 90% of your timeline!

Think of it as an iceberg. If you think the ice you see peaking above the water is daunting, there's a lot more hiding below the surface.

Why Does the Last 10% Create the Most Challenges?

So, why is this issue common enough to be so well-known in engineering circles? All projects are unique, but they can encounter many of the same challenges that result in setbacks.

Here are a few reasons why that final push toward the end of a project takes the most time.

Scope Creep

One issue that can make this undertaking run out of control is scope creep. This phenomenon occurs when the original scope of your development project changes and expands.

Usually, creep begins with a minor change. But before you know it, you're adding many unnecessary features and making changes that force the process back to square one.

The best way to avoid creep is to create defined requirements. Your requirements will detail every aspect of the finished product. That includes its features, design, functionality, etc. The requirements should involve input from every stakeholder to ensure all your bases are covered.

Once you set the specifications, stick to them. It's about setting boundaries and defining the project's scope to avoid doing too much.

Putting Off Difficult Tasks

We've all been there: When you're presented with a mountain of tasks, you tend to gravitate toward the more straightforward items. It's that "I'll figure that out later" mindset. The unknowns will take longer to flesh out, so you prioritize the tasks you already understand.

Sounds simple enough, right? Unfortunately, this approach leaves little room for flexibility. You know how long some tasks will take, but the rest is unpredictable. Therefore, it's easy to miss deadlines and spend significant time on that final 10%.

Tackling those unknowns can help you plan for the rest of the project's milestones more efficiently. It's a concept known as "pre-crastination." Do the challenging aspects of the project first, and the rest will sail smoothly.

Never-Ending Changes

Another productivity killer is constant last-minute changes. We touched on this earlier, but it's such a common issue that it deserves its own mention. Last-second adjustments and alterations to the design are bound to happen.

You can do your best to avoid them with well-written requirements, but they inevitably come up.

Many projects encounter problems because they don't have the inherent flexibility to accommodate every change request. Before making adjustments, you must consider the project's budget, deadline, and how the modification will impact other processes. Failure to do so is what causes expensive delays.

If, after reviewing all these factors, the team decides to move ahead with a last-minute change, at least they know the consequences. A revised budget and schedule must be part of the review.

Over-Committed Resources

It's common for projects to share resources, such as engineers and specialists. There's nothing wrong with that. However, over-committing to multiple endeavors is where the trouble starts. Eventually, things begin to break down as your resources have to juggle several tasks simultaneously.

Communication is usually the first thing to go. Team members have no choice but to skip meetings to get their work done on time, resulting in a breakdown of clarity. Then, that issue snowballs into incorrect requirements, time-consuming revisions, and other problems.

Good project management is critical to avoiding over-commitment. While saving money by having one person contribute to several projects seems ideal, it's not worth it if it creates massive delays.

Unexpected Hurdles

Another factor that creates delays in the final stretch is unexpected problems. We're talking about obstacles that weren't accounted for during the planning phase.

Every project has risks. There are risks that certain features won't be compelling enough to attract buyers, risks that technical details are too impractical to execute, risks of supply shortages during manufacturing, and so much more.

The possibilities are endless, and there are countless ways for the development process to come to a grinding halt.

The best way to avoid these unexpected hurdles is to do risk mitigation early in the project. Identifying risks and developing strategies to overcome them is how you move a project smoothly to the finish line.

It's about planning for all possible scenarios and taking steps to minimize risks at every turn.

Avoid the 90/10 Conundrum

At Voler Systems, we understand the 90/10 rule and effectively circumvent this common pitfall. Unlike many engineering teams that struggle with the 90/10 rule, we have developed a robust project management methodology that effectively neutralizes this issue.

Through a combination of proactive risk management, strict adherence to project scope, and prioritizing difficult tasks early on, Voler ensures the final 10% of a project does not disproportionately consume time and resources.

Contact us to help make your project more efficient and frustration-free than any you've done before.

The 90/10 Rule: Why the Final Stretch is Often the Toughest (1)

The 90/10 Rule: Why the Final Stretch is Often the Toughest (2024)

FAQs

Why is the last 10% of a project the hardest? ›

You know how long some tasks will take, but the rest is unpredictable. Therefore, it's easy to miss deadlines and spend significant time on that final 10%. Tackling those unknowns can help you plan for the rest of the project's milestones more efficiently.

What is the 90 10 rule? ›

The 90–10 rule refers to a U.S. regulation that governs for-profit higher education. It caps the percentage of revenue that a proprietary school can receive from federal financial aid sources at 90%; the other 10% of revenue must come from alternative sources.

What is the 90 10 rule for success? ›

Understanding the 90-10 Principle

The 90-10 principle, or the Pareto Principle, asserts that approximately 90% of outcomes result from 10% of efforts. This concept originated from the observations of Italian economist Vilfredo Pareto, who noted that 80% of the land in Italy was owned by 20% of the population.

What is the 90 10 theory? ›

Enter the 90/10 Principle. The 90/10 Principle was popularized by Stephen Covey, the amazing author of The 7 Habits of Highly Effective People. It states that: 10% of life is made up of what happens to you, and 90% of life is decided by how you react. We truly have no control over 10% of what happens to us.

What is the 90 10 rule in project management? ›

The 90/10 Rule: “90% of the work gets done in 10% of the time” and its corollary: “10% of the work takes 90% of the time.” In computer programming and data migration projects, you also have the humorous aphorism that says: “The first 90 percent of the code accounts for the first 90 percent of the development time.

Why is finishing a project so hard? ›

Here are a few possible explanations: Perfectionism: People who are good at writing may set high standards for themselves and feel a lot of pressure to produce work that meets those standards. This can lead to perfectionism, which can in turn make it difficult to finish projects.

What is the 90 10 final rule? ›

The 90/10 final regulations, on which the Institutional and Programmatic Eligibility Committee (Committee) reached consensus, implement statutory changes that require proprietary institutions to obtain at least 10 percent of their revenue from sources other than Federal education assistance funds and more closely align ...

What does the 90 10 rule state? ›

The 90/10 rule on security states that 90% of cybersecurity is about implementing the right policies and procedures, while the other 10% is about implementing the right technology. People represent your human risk, which is the least managed and mitigated risk in cybersecurity.

What is the 10-90 rule? ›

Analytics guru Avinash Kaushik has identified a useful rule of thumb for companies looking to make a decision about what analytics tools to acquire. It's called the 10/90 rule of analytics and it states that for every $10 you spend on analytics you should be spending $90 on the people to analyse those reports.

What is the 90 10 principle of life? ›

HILL AIR FORCE BASE, Utah -- Author Stephen Covey described a principle he called the 90/10 principle. Ten percent of life is made up of what happens to you. Ninety percent of life is decided by how you react. We really have no control over 10 percent of what happens to us.

What is the 90 10 rule of leadership? ›

The 90/10 leadership rule suggests that 90% of a leader's time should be devoted to developing their team, while only 10% should be used for goal setting and problem-solving. This rule is beneficial for both the leader and the team. This ensures that everyone is working towards a common goal.

What is the 90 10 solution? ›

Many successful early-stage startups follow the 90/10 Rule: do what gets you 90% of the solution with 10% of the effort. This rule emphasizes the need for efficiency and prioritization in your business operations.

What is a 90 10 decision? ›

“The core idea is that people should be able to make roughly 90 percent of the decisions that are required for them to get the job done,” she writes in the book. Only the remaining 10 percent of decisions should be made by managers.

What is the 90 10 rule content? ›

You want the majority of your emails to be 90% content and 10% promotional. You also want 90% of all the emails you send to follow this 90/10 rule, with the other 10% being purely promotional. Of course, it doesn't need to literally be 90/10. It can be 80/20 or even 95/5.

What does 90/10 mean? ›

The 90/10 Rule is one of the most helpful concepts for life and time management. According to this principle: 10 percent of your activities will account for 90 percent of your results. This can change the way you set goals forever!

What is the most challenging part of a project? ›

Unrealistic project deadlines are one of the biggest challenges faced during project management that teams and project managers confront, sometimes as a result of the difficult-to-meet client or stakeholder expectations. Most project timelines do eventually slip due to the 'unrealistic deadlines'.

What is the hardest part of project management? ›

Here, consider 12 common project management challenges and what you can do to help resolve each of them:
  1. Scope creep. ...
  2. Poor communication. ...
  3. Unclear goals. ...
  4. Poor budgeting. ...
  5. Skill gaps. ...
  6. Insufficient risk analysis. ...
  7. Lack of accountability. ...
  8. Stakeholder disengagement.
Nov 30, 2023

Why do 70% of projects fail? ›

The findings revealed that a lack of clear goals (37%) was the most common factor contributing to project failure. This is followed by inadequate stakeholder engagement (25%), ineffective risk management (23%), and poor communication (21%).

What is the #1 reason for project failure? ›

Poor planning is the root cause of project failures. A project's success relies heavily on defining in detail the scope, each member's role, and the time frame. Lack of concrete planning exposes a project to unprecedented risks and issues.

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