Learn English – What’s the difference between “apparel” and “clothing”

Weltanschauung is used as an English word, from the German because the English worldview is too vague and not comprehensive enough. (For anschauen = to look at, rather with the meaning "to take a good look at", for schau = to show, display, as opposed to blicken = to look, or aussehen from sehen = to see).

Primarily it means a way a person looks at the phenomenon of life as a whole. Some people (particularly those who have not lived very long) have not formed any broad (inclusive, even "sophisticated") view of life. Others consider a large number of factors before forming their overall view — maybe in their seventies — of the phenomenon of human existence. Typically a person's Weltanschauung (as an English word we drop the capital letter required of all German nouns) would include a person's philosophic, moral, and religious conclusions — including e.g. the duality of spirit and matter — and perhaps their conclusions about the origins of the universe and of the development of life. They would also have conclusions about the state, society, politics and economic activity. I suggest def. "A person's conclusions about existence (however tentative) at a particular time of life, after taking a good look at everything they have come across about". What do the German philologists say about my amateur offering?

In the 'Have you seen those boots?' example, if meant as an exclamation, there is also a sense of distancing oneself. That is to say if it was meant to imply "Have you seen those boots, they are fantastic/awful", one is indicating the boots are not yours, but belonging to someone else, and thus conceptually distant from you.

If the question is taken to mean "Where are the boots?" then their distance is unknown, and thus also conceptually distant.

In summary, I would use 'those' when something is either physically or conceptually distant, and 'these' when they are near to me, either in proximity, or my emotional sentiment toward them. That's the best way I can frame it logically, anyway.