Though the banks remain frustratingly opaque, they did at least go some way this week to placating those who suspect their accounting style of being more mark-to-make-believe than mark-to-market.

• 银行虽然依旧讳莫如深，但本周它们至少做出一些努力，试图减少人们对它们会计方式变得更加按估值而非市价计算的怀疑。