- Crime = voluntary act + mens rea + result
- Act: physical activity or omission of ∆.
- MPC 2.01(1): conduct must include voluntary act.
- Must first show duty to provide before finding guilt for failing to provide.
- Malnourished baby dies, other child in a sad state.
- Custodian charged with involuntary manslaughter.
- Convicted, but reversed + remanded because need to show duty of care.