Radiant_Radius

Yes, some of it. The operating system is open source, but the device manufacturers (Samsung, etc) usually add a bunch of closed source stuff to their own fork of the Android OS.

Here’s part of the OS code: https://github.com/aosp-mirror/platform_system_core?files=1

Why are hospitals still using paging though? Wouldn’t texting be faster, especially with speech-to-text?

thou (pron.)

Old English þu, from Proto-Germanic *thu (source also of Old Frisian thu, Middle Dutch and Middle Low German du, Old High German and German du, Old Norse þu, Gothic þu), from PIE *tu-, second person singular pronoun (source also of Latin tu, Irish tu, Welsh ti, Greek su, Lithuanian tu, Old Church Slavonic ty, Sanskrit twa-m).

tough (adj.)

Old English toh "strong and firm in texture, tenacious, sticky," from Proto-Germanic *tanhu- (source also of Middle Low German tege, Middle Dutch taey, Dutch taai, Old High German zach, German zäh), which Watkins suggests is from PIE *denk- "to bite," from the notion of "holding fast."

trough (n.)

Old English trog "wooden vessel, tray, hollow vessel, canoe," from Proto-Germanic *trugaz (source also of Old Frisian, Old Saxon, Old Norse trog, Middle Dutch troch, Dutch trog, Old High German troc, German trog), from PIE *dru-ko-, from root *dru-, *deru- "wood, tree" (see tree (n.)). Originally pronounced in English with a hard -gh- (as in Scottish loch); pronunciation shifted to "-ff," but spelling remained.

though (adv., conj.)

c. 1200, from Old English þeah "though, although, even if, however, nevertheless, although, still, yet;" and in part from Old Norse þo "though," both from Proto-Germanic *thaukh (source also of Gothic þauh, Old Frisian thach, Middle Dutch, Dutch doch, Old High German doh, German doch), from PIE demonstrative pronoun *to- (see that). The evolution of the terminal sound did not follow laugh, tough, etc., though a tendency to end the word in "f" existed c. 1300-1750 and persists in dialects.

through (prep., adv.)

late 14c., metathesis of Old English þurh, from Proto-Germanic *thurkh (source also of Old Saxon thuru, Old Frisian thruch, Middle Dutch dore, Dutch door, Old High German thuruh, German durch, Gothic þairh "through"), from PIE root *tere- (2) "to cross over, pass through, overcome" (source also of Sanskrit tirah, Avestan taro "through, beyond," Latin trans "beyond," Old Irish tre, Welsh tra "through"). Not clearly differentiated from thorough until early Modern English. Spelling thro was common 15c.-18c. Reformed spelling thru (1839) is mainly American English.

thorough (adj.)

c. 1300, adjectival use of Old English þuruh (adv.) "from end to end, from side to side," stressed variant of þurh (adv., prep.); see through. Related: thoroughly; thoroughness.

You should read "The Mind's Eye" by Oliver Sacks. It's a collection of case studies involving neuroscience and vision. It's amazing how different people with vision problems represent the world in their minds.

Do you think you've retained a visual mental picture of the world around you, like for navigating your house and thinking about the people in your life? Or have you stopped thinking about the world in visual terms and come up with a new mental representation?