?? translating hemingway (or hemingway parody) into german ... ??? .... and/or having hemingway parody contest in german ... ?? ...

?? wiles's description of doing mathematics ... ?? previous room as speck in next room ... ?? ...

?? writing with blue ink and yellow anti-ink on green paper ... ?? or maybe green-tinted glass ... ?? sunglasses ... emerald city ... ??? ... precision-erasing ... ?? ... deconvolution .... ????.....

?? or photographic negative ... superimposed with positive .... ??? .... issue of "neutral" here ??? ... ??? ....

?? positive and negative superimposed with slight shift ... ??? bishop berkeley ... ghost of departed quantity ... ?? cheshire cat ??? ... ??? .....

?? hmmm, gradual / continuous fadeout if you do this with spatially continuous light intensity ... ???? .... "renormalization" .... ??? ..... ?? (somewhat ??) avoiding this renormalization issue with discrete shifts instead of continuous ... ???? ...

?? superimposing sequentially shifted positive copies of superimposition of shifted positive and negative copies ... ?? in effect magnifying the shift ... fundamental theorem of calculus / summing geometric series ... bank account ... sine, cosine ... ??? excessive deposits and withdrawals ... hedge fund .... ??? ....

"big shift as sum of little shifts" ....

?? cross-country skiing on high-relief nazca-like writing ??? .... (?? actual existing examples ?? ...) ...?? "slope" ... positive vs negative ... ??? ... blue and yellow pens yoked together horizontally ... horizontal partial derivative ... or vertically, etc ... horizontal vs vertical bars of various parts of various letters ... in effect more or less disappearing or not disappearing .... ??? .....