Most Punctual bugs produce no error — a wrong-domain function silently returns 0 and missing >> yields no output

The majority of Punctual mistakes never produce a parse or compile error. A function used in the wrong domain (e.g. lpf in a >> rgb video chain, or circle in >> audio) silently returns the constant 0. A statement without a >> output operator is computed but never routed anywhere. Feedback with gain >= 1 blooms to white without throwing. Diagnosis requires listening and looking — not reading an error string. This is distinct from the parse-error case where the program is actually syntactically broken.

Examples

Writing lpf 400 (osc 220) >> rgb — lpf is audio-only, so it returns 0 and the image goes black with no error. Adding >> rgb to an audio expression silences but doesn’t throw.

Assessment

Name three Punctual bugs that produce no error message. For each, describe the visual or audio symptom and the correct fix.