| 16554 | Activities have place, rate, duration, entities, properties, modes, direction, polarity, energy and range |
| 16556 | Penicillin causes nothing; the cause is what penicillin does |
| 16562 | We understand something by presenting its low-level entities and activities |
| 16563 | The explanation is not the regularity, but the activity sustaining it |
| 16555 | Functions are not properties of objects, they are activities contributing to mechanisms |
| 16528 | Mechanisms are not just push-pull systems |
| 16530 | A mechanism explains a phenomenon by showing how it was produced |
| 16529 | Mechanisms are systems organised to produce regular change |
| 16553 | Our account of mechanism combines both entities and activities |
| 16559 | Descriptions of explanatory mechanisms have a bottom level, where going further is irrelevant |
| 16564 | There are four types of bottom-level activities which will explain phenomena |
| 16561 | We can abstract by taking an exemplary case and ignoring the detail |
| 16558 | Laws of nature have very little application in biology |