According to economist and Islamic finance critic Feisal Khan, a "true" or strict Islamic banking and finance system of profit and loss sharing (the type supported by Taqi Usmani and the Shariah Appellate Bench of the Supreme Court of Pakistan) would severely cripple central banks' ability to fight a credit crunch or liquidity crisis that leads to a severe recession (such as happened in 2007-8). This is because if credit was provided by taking "a direct equity stake in every enterprise" (the PLS approach) it would contract in a credit crunch. But situations like this — when financiers are "less and less sure of the creditworthiness of their financial sector counterparties" and essentially stop lending to even the biggest and most stable borrowers or even other banks — is exactly the time when credit expansion and "flooding" the economy with liquidity is needed to prevent widespread business bankruptcy and unemployment.