The point is that Italy's bond yield - the implicit interest rate it pays - is unlikely to fall decisively below the catastrophically unaffordable 7% unless and until the eurozone demonstrates that there is a bailout facility (of some sort) that has sufficient resources to lend to Italy if investors refuse to do so.

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To make money for themselves they reach for yield by lending to more speculative borrowers whom they can charge more interest to, and they too often lend to high interest paying governments whose junkie bonds they buy for a fat yield as well as their implicit security.

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The implicit hint is that inflation and fiscal stimulus can yield a low-quality growth that is unsustainable.

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As ever, a drop in the yield on German bonds, the fall in the implicit interest rate it would have to pay, is not a sign that investors are any more hopeful that a solution to the eurozone's stresses are anywhere in sight.

BBC: Be scared when investors throw money at Germany

The implicit interest rate on 10-year loans to Italy (the yield on 10-year bonds) rose again above the 7% level which is regarded as punitively unaffordable.

BBC: Be scared when investors throw money at Germany

Right at the opening, there was a spike in the implicit interest cost to Italy of borrowing for two years (the yield on two-year bonds) to a euro-era record of around 8% - and then it fell back to 7.5% or so, which is where it was on Friday (which is still high).

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The implicit interest rate that investors charge for lending to Spain for ten years - what's known as the yield on the benchmark ten-year bonds - has in the past 24 hours exceeded what they demand of Italy, and is now more or less the same.

BBC: Spain becomes eurozone's weaker link