What is the origin of the idiom "leave someone to their own devices" and when to use it?

The origin of the idiom "leave someone to their own devices" can be traced back to the late 19th century. Its usage is believed to have originated from the field of engineering, specifically referencing mechanical or electrical devices. In the early days of technology, engineers would design and construct devices that were intended to operate autonomously without constant human intervention. It is commonly used when discussing scenarios where individuals possess the necessary skills or resources to handle a situation on their own.