
The Critical Chain Implementation Handbook

2) Were the expected effects realized?
David Updegrove • The Critical Chain Implementation Handbook
1) Was the step correctly implemented?
David Updegrove • The Critical Chain Implementation Handbook
Sufficiency Assumption: The Sufficiency Assumption indicates that there is not yet enough information to fully achieve the strategy, even if the chosen tactic is solid.
David Updegrove • The Critical Chain Implementation Handbook
It is possible that a single assumption is so powerful that it can lead to a tactic without an additional assumption.
David Updegrove • The Critical Chain Implementation Handbook
Parallel Assumptions are statements about how we perceive reality. There are usually, but not always at least two Parallel Assumptions in an S&T entity.
David Updegrove • The Critical Chain Implementation Handbook
Parallel Assumption: One might be able to think of many different tactics to achieve a particular strategy. But are all tactics created equal? Does it not stand to reason that some tactics will be more effective than others? If so, how do we know we have chosen the best, most effective tactics to secure our strategy? The parallel assumptions lead u
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The Necessary Assumption exists at the top of every S&T entity with the exception of the very top entity—the overall company strategy.
David Updegrove • The Critical Chain Implementation Handbook
Necessary Assumption: The Necessary Assumption tells us the reason we need a strategy—why creating this particular strategy is necessary to our success. Once we know why we need a strategy, we can create one from a foundation of understanding.
David Updegrove • The Critical Chain Implementation Handbook
Even the assumptions in the S&T trees need to be challenged and tested. Some customization might be required for a particular environment. This could mean different assumptions and different tactics.