Prefer video? Watch How to Challenge Your Assumptions, the talk I gave at Ignite Asheville 2012.
Assumptions can limit our thinking, making us think the possible is impossible.
By challenging assumptions, we can unlock new creativity & take radical leaps forward in our thinking of potential solutions, allowing us to do what initially seemed impossible.
But how do you challenge assumptions?
Are there specific techniques that can help you unlock your creativity and come up with a radical new solution that dramatically improves upon the old one?
Write Down Your Assumptions
First things first. Before you can challenge your assumptions, you must write them down.
Spend time on this part. Often the mere act of writing down assumptions highlights ways around them.
Work with multiple people and brainstorm to uncover hidden assumptions you may not be aware of. Break down each piece of your problem or solution into parts and ask what assumptions you have about each part.
Examine Your Assumptions
Examine your assumptions by using the follow techniques:
 Redefine Words
Examine the meaning of words in assumptions. An assumption can be inaccurate because it uses words that are too narrowly defined, too broadly defined or interpreted differently by different people.Terms defined too broadly may mean an assumption that only applies to some situations gets applied to all situations. Conversely, terms defined too narrowly may restrict thinking and hide opportunities. Different people may state the same assumption, but interpret that assumption differently because they use different meanings for the core concepts.
 Examine Your Qualifiers
Qualifying words sneak into assumptions, turning accurate statements into overgeneralizations. Watch out for words and phrases like “never”, “always”, “all of” and “none of”. Drill into adjectives and make sure they qualify your nouns correctly.  Test Negative Statements
Restate the assumption in the negative. Does it still make sense? Negative statements can highlight logical fallacies.  CrossValidate Your Assumptions
If you have multiple related assumptions, build a model that calculates one assumption from the other and vice versus. When dealing with numbers, a topdown versus bottomup analysis can crossvalidate your assumptions.For instance, calculate your revenue from the assumption of how many leads you can generate a month, then calculate the number of leads you need from your revenue assumption. If the numbers differ greatly between the two models, the assumptions are either wrong or the models are wrong. Most often, it’s the assumptions.
 Hypothesize Without Your Assumption
Do a thought experiment on what would happen if the assumption didn’t exist. How would that change your actions and the actions of those around you? What other assumptions wouldn’t make sense because they depend on the assumption you’re removing? Even if the assumption is valid, assuming it’s not highlights dependencies between assumptions.  Hypothesize With Different Assumptions
Do another thought experiment, but instead of eliminating the assumption, narrow, broaden or change a parameter of the assumption. What consequences does this have?For instance, if my assumption is if I buy a red car I increase my chance of getting a speeding ticket, what happens if I assume buying a blue car increases this chance? Or if I assume that it has to be not just a red car, but a red sports car?
 Ask Why
Ask why the assumption exists. Uncover the reasoning behind them the assumption and examine that. Can the underlying reason be used to create a more accurate assumption?For instance, if the reason I assume red cars get more speeding tickets is because red cars get bought by people who like to speed, my assumption switches from the car to the person buying the car.
 Follow the Rabbit Hole Down
Iterate on each of these techniques as assumptions uncover further assumptions. Try to get to the root assumptions and validate those. Then derive additional assumptions if appropriate. Use the 5 Whys method to keep drilling into your problem.
Using these techniques you can quickly uncover problems with your assumptions and come up with creative new solutions.
Keep in mind, though, that even with these techniques, assumptions remain just that, assumptions. Use welldesigned experiments to validate them if you can, but keep an open mind that any of your assumptions may not be true.
What assumptions do you need to challenge?

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