Noreena Hertz is the anti-globalisation activist and author whose acute dissection of the global debt economy in her recent book IOU won glowing reviews.
She has one amazing statistic, on a day which has seen figures flying left, right and centre.
"The EU has promised to double aid by 2015. Tony Blair has promised to reach the UN target of 0.7% GDP by 2013. If he unilaterally brought that forward to 2010, we could save an extra 7.5 million lives."
Fresh from addressing the crowd from the main stage in the Meadows, she rejects criticism that today's demo is too depoliticised. "It's critical that the protesters do not allow themselves to become cheerleaders. But that crowd of tens of thousands cheered the most radical parts of my speech. These people are more radical than people give them credit for."
