As for the criticism that PE firms bleed cash out of companies through debt-financed dividend recapitalizations, the data show that such deals consistently have lower initial leverage and, therefore, lower default rates than those seen in the broader market.

FORBES: Romney, Private Equity And Defaults: What The Record Shows

But we need to find out why some people bleed and how to reduce this to increase the effectiveness of clot-busting treatment.

BBC: Brain

Further, many of them point out that the last time markets were at these nose-bleed levels, they fell sharply.

FORBES: FOCUS: Stock Market Might Rise A Little Further, But Gains Unlikely To Be Sustainable