# #terminology > 6 public memos tagged #terminology on MythOS. ## Links - [Tag Page](https://mythos.one/tag/terminology) - [MCP Server](https://mythos.one/api/mcp) ## Memos - [Knowledge Retention](https://mythos.one/me/brianswichkow/e33643): References Tags terminology - [playtest](https://mythos.one/me/brianswichkow/a3290f): A playtest is the process by which a designer tests for bugs and other design flaws before bringing their concept to market. Playtesting originated in computer, board, and role-playing games, where... - [Order of Magnitude](https://mythos.one/me/brianswichkow/93eb66): An order of magnitude is an approximate measure of a number, equivalent to the logarithm (base 10) rounded to a whole number; an exponential change of plus-or-minus one in the value of unit. For... - [Lifestyle Design](https://mythos.one/me/brianswichkow/d50f7c): Lifestyle Design is a term popularized by Tim Ferriss in The 4-Hour Workweek which describes ownership of ones environment to attain their ideal experience in life. Ferriss later cited his use of... - [Gifted Perspective](https://mythos.one/me/brianswichkow/4d9998): Gifted Perspective refers to the use of Creative Nonfiction to convey a vibrant illustration of ones perception of another as an intangible element of gratitude. Examples Gifted Perspective: Austin... - [Knowledge Accessibility](https://mythos.one/me/brianswichkow/289522): References Tags terminology coming_soon