THE
MECHANICALFALLACY
loiAndin
supportofthiscontention,thescientific
criticwillshowhow,inthe
Gothicstyle,everydetailcon-fesses
aconstructivepurpose,
anddelightsusbyoursenseofitsfitness
fortheworkwhichis,justthere,preciselyrequiredofit. And
hewillturntotheDoricstyleandassert the same
ofthat.. Both the greatstylesof
thepast, hewillsay,
werein
facttruthfulpresentations of a special
and perfect constructiveprinciple, the one
of the lintel, the other of theI
vault.<::Now,in so faras thisargument
is basedon theGreekand
mediaevalpracticeofarchitecture,itisanargument aposteriori. But it is clearly
useless toreason dogmatically a posteriori,
except from theevidence
of all the facts. If all the architecturewhichhasevergivenpleasureconfirmedtheprinciplestated in the definition,
thenthe argument
wouldbe strong, even if it were not logicallyconclusive.Admitting,then (forthemoment),that thedescrip-tion
givenof Greekand mediaevalarchitectureis afairone
;admitting,also, theGreekpre-eminenceintaste,
and the acknowledgedbeauty of the Gothic,theargumentfromtheseisclearly not, initself, anadequate condemnationof a different practice em-ployed by the Romansand the Renaissance,
whichhasenjoyeditsown
popularity,andwhose casehasnotyetbeentried.Butwe maysuppose
ourscientificcritictoreply