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B.5.TU:3 - Forces
| Force | Consequence for the method |
| A question focuses learning, while an unfamiliar account can change the question. | Begin with one intended use and revise it when a construction reveals a consequential distinction. |
| A worked source case saves effort, while a new application changes some of its premises. | Reuse the case and identify the changed contribution before carrying over its answer. |
| Operational fluency and understanding of derivations serve different work. | Recover the depth needed to apply, criticize or alter the contribution. |
| A small case exposes connections, while a general claim reaches beyond that case. | Keep the demonstrated use and the argument for greater reach distinguishable. |
| Available assistance can supply difficult operations, while the receiving use still needs interpretation. | Divide work at the missing contribution and retain the meaning of the returned result. |