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NOT.2:3 - Forces
| Force | What must be reconciled |
| Compact writing and recoverable structure | Omitting delimiters saves space but can hide an operand boundary. |
| Local naming and larger composition | A useful short name inside one component can collide with a name supplied by its surroundings. |
| Equal types and different roles | Two admissible inputs may occupy different positions in an operation. |
| Flexible presentation and stable interpretation | Layout may change while connections remain; another layout change may alter the expression. |
| Partial construction and usable interpretation | An unfinished expression can retain a missing part, provided the reader knows which operations remain available. |