Conventional ("tailhook") aircraft rely upon a landing signal officer (LSO, radio call sign paddles) to monitor the aircraft's approach, visually gauge glideslope, attitude, and airspeed, and transmit that data to the pilot. Before the angled deck emerged in the 1950s, LSOs used colored paddles to signal corrections to the pilot (hence the nickname). From the late 1950s onward, visual landing aids such as Optical Landing System have provided information on proper glide slope, but LSOs still transmit voice calls to approaching pilots by radio.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What are LSO's still being used to do?
Ah, so.. transmit voice calls to approaching pilots by radio

Unlike other Germanic languages, Dutch doesn't have phonological aspiration of consonants. Like English, Dutch did not participate in the second consonant shift. Like most Germanic languages, the Dutch consonant system did not undergo the High German consonant shift and has a syllable structure that allows fairly complex consonant clusters. Dutch also retains full use of the velar fricatives that were present in Proto-Germanic, but lost or modified in many other Germanic languages. Dutch has final-obstruent devoicing: at the end of a word, voicing distinction is neutralised and all obstruents are pronounced voiceless. For example, goede ("good") is /ud/ but the related form goed is /ut/. Dutch shares with German Final-obstruent devoicing (Du brood [brot] and German Brot vs Eng bread).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How are obstruents pronounced at the end of Dutch words?
Ah, so.. voiceless

While many secular buildings exist from the Late Middle Ages, it is in the buildings of cathedrals and great churches that Gothic architecture displays its pertinent structures and characteristics to the fullest advantage. A Gothic cathedral or abbey was, prior to the 20th century, generally the landmark building in its town, rising high above all the domestic structures and often surmounted by one or more towers and pinnacles and perhaps tall spires. These cathedrals were the skyscrapers of that day and would have been the largest buildings by far that Europeans would ever have seen. It is in the architecture of these Gothic churches that a unique combination of existing technologies established the emergence of a new building style. Those technologies were the ogival or pointed arch, the ribbed vault, and the buttress.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is an example of architectural technology that is seen in Gothic construction?
Ah, so..
the ribbed vault