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We’re Having a Party is an interactive game illustrating the advantages of single piece flow over batch flow through a process.
By taking a smaller set of requirements all the way to completion, you get something to the customer faster. Conversely, if all the requirements are processed at the same time, changes later in the cycle become more costly.
Single piece flow is often faster then batch and queue. This is due to the fact that each cross-functional participant can take ownership of a module all the way to completion, reducing overall task-switching and hand-offs. [...]