(A) DARPA wanted scientists to be able to collaborate and share research easily.
The initial purpose of ARPA was to enable mainly scientific users at the connected institutions to communicate and share resources, also to be able to link computers at Pentagon-funded research institutions over telephone lines, and it became the technical foundation of the Internet.
The limitation of computer are:
- No self-intelligence
- No feeling
- No learning power
- Dependency
The OS shell allows access to the operating system services
