A Machine is any point at which energy enters or leaves a structure, connecting it with another structure.
The Machine is intended not to do a man out of a job, but to take the heavy labor off his back place it on the broad back of the machine.
The Machine is dangerous because its very purpose is to promote unthinking to increase the number of things we can do without thinking.
The Machine is abstract because the asignifying signs with which it concerns itself lack determinate form or actual content definition. Though abstract, they are not unreal. They are in transport. They constitute the dynamic 'matter' of expression.
Machine is a replacement for the confusing notion of 'subject'. Famously, the very connection between a child's mouth and a mother's breast, coming together, we might call a 'nourishing machine'.