It is of special interest in the stories of the children and children's games and how they interface with sleep and the unconscious mind. In Vico's imagination, the childhood of the world originates in a night of thick ignorance, where everything is "reveiled", as Joyce would put it. Vico uses a term for the childhood of the human race that is usually translated as "ignorance". But it in many ways anticipates modern psychology where childhood where one is "jung and easily freudened", is tied to the archaic, and that in turn is tied to the unconsciousness. That must have been attractive to Joyce, who appears to have been deeply interested in how the night mind, the unconscious, represents a kind of cloud of unknowing, not just out of awareness, but forming a kind of erasure. Certainly the term "ignorance" has an overlaid meaning, both simple lack of sophistication and knowledge on the one hand, but a dark vacuum of awareness. Into that nothingness Vico posits the unnameable, "the fright of light" that is the first lightning spark of simultaneously, language ("O Loud") and consciousness, and the development of the individual mind (en-lightningment) on a parallel track with history. Vico considers that the mind first frames consciousness in the form of poem and myth to react to this first flash, in confusion and fear, in "thud and blunder". The Lord thundred from heauen: and the most high vttered his voice. ...2 SAMUEL 22:14 (1611 KING JAMES BIBLE). Note that thundred implies both thundered, and hundred; I have not heard this anywhere, but I suspect that's why Joyce uses a hundred letter word.
Here's a link with a discussion of the thunder words:
The hundredletter thunderwords of Finnegans Wake
For your convenience, I attach them here:
FW003 (thunder): bababadalgharaghtakamminarronnkonnbronntonnerronntuonnthunntrovarrhounawnskawntoohoohoordenenthurnuk FW023 (thunder): Perkodhuskurunbarggruauyagokgorlayorgromgremmitghundhurthrumathunaradidillifaititillibumullunukkunun FW044 (clap): klikkaklakkaklaskaklopatzklatschabattacreppycrottygraddaghsemmihsammihnouithappluddyappladdypkonpkot FW090 (whore): Bladyughfoulmoecklenburgwhurawhorascortastrumpapornanennykocksapastippatappatupperstrippuckputtanach FW113: Thingcrooklyexineverypasturesixdixlikencehimaroundhersthemaggerbykinkinkankanwithdownmindlookingated FW257 (shut the door): Lukkedoerendunandurraskewdylooshoofermoyportertooryzooysphalnabortansporthaokansakroidverjkapakkapuk FW314: Bothallchoractorschumminaroundgansumuminarumdrumstrumtruminahumptadumpwaultopoofoolooderamaunsturnup FW332: Pappappapparrassannuaragheallachnatullaghmonganmacmacmacwhackfalltherdebblenonthedubblandaddydoodled FW414 (cough): husstenhasstencaffincoffintussemtossemdamandamnacosaghcusaghhobixhatouxpeswchbechoscashlcarcarcaract FW424 (Norse gods): UllhodturdenweirmudgaardgringnirurdrmolnirfenrirlukkilokkibaugimandodrrerinsurtkrinmgernrackinarockarThe tenth and last has 101 letters, making 1001 letters in all.