briar-patch

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English - English
An intellectual or philosophical issue abounding with seemingly unresolvable problems; a theoretical quandary or impasse

I do not want to spend long in examining the arguments for this general deprecation of sense-perception or the intellectual motives for denying all credentials to sense-perception in order to enhance those of calculation, demonstration or religious faith. I want to get quickly to the much thornier briar-patch, the place, namely, where scientific accounts of perception seem to issue in the consequential doctrine that observers, including the physiologists and psychologists themselves, never perceive what they naïvely suppose themselves to perceive.

A dense thicket of thorny plants; ground made impassible by the impenetrable overgrowth of prickly vegetation.“briar patch” listed in Webster’s New Millennium™ Dictionary of English, Preview Edition (v. 0.9.7), Copyright © 2003–2009 Dictionary.com, LLC