A note-taking app: A note, what is a note? What is an app? Personal notes, clients, collaboration, users of the notetaking app? At my desk I have a chair and

A note-taking app: A note, what is a note? What is an app? Personal notes, clients, collaboration, users of the notetaking app? At my desk I have a chair and desk and PC and screens and pieces of sticky paper, cut-up pieces of scrap paper, and coloured pens on-hand to take notes. In the wall we have a safe to store any notes. And a document retention policy. And a bigger safe downstairs. At the gym I have a note taking app on my phone, that doesn't include titles or anything other than body text. That works for recalling really quickly, and is not 'structured data' other than a data and preview. I use email to send notes to myself, and this allows attaching files which might or might not be needed again (document retention policy). I have a personal wiki that allows wiki-like harnessing of rich media, and is available-anywhere, a constantly living document, document-of-documents, not restricted to a computer or OS or platform for accessibility. So... what is a note, the use of the note, the potential for sharing and/or collaboration and/or storing? Is a note a note in dictation, distraction, and no note leads to better noting?