A more thorough explanation:

Obsolescence is when something becomes outdated or falls out of use. It can happen because of new technology or changes in demand.

• A VHS tape player is an example of obsolescence because it is no longer used since DVDs and streaming services became popular.
• A computer that is slow and cannot run new software is an example of functional obsolescence.
• A company that produces smartphones with planned obsolescence designs them to only last a few years before needing to be replaced.

These examples show how obsolescence can happen in different ways. It can be because of new technology, like with VHS tapes and smartphones. It can also be because of problems with the product, like with the slow computer. And sometimes, it can be intentional, like with planned obsolescence.