explode and implode
"...if they didn't authorize a seven-hundred-billion-dollar bank bailout the financial system would implode."

Could anyone answer why "implode" is used not "explode"?

More on the context:
"On September 18, 2008, Hank Paulson, the Secretary of the Treasury, and Ben Bernanke, the chairman of the Federal Reserve, went to Capitol Hill and told congressional leaders that if they didn't authorize a seven-hundred-billion-dollar bank bailout the financial system would implode." (referring to the bankruptcy of Lehman Brothers)

Question

explode and implode
"...if they didn't authorize a seven-hundred-billion-dollar bank bailout the financial system would implode."

Could anyone answer why "implode" is used not "explode"?

More on the context:
"On September 18, 2008, Hank Paulson, the Secretary of the Treasury, and Ben Bernanke, the chairman of the Federal Reserve, went to Capitol Hill and told congressional leaders that if they didn't authorize a seven-hundred-billion-dollar bank bailout the financial system would implode." (referring to the bankruptcy of Lehman Brothers)

Answer

Implode means to collapse in on itself as opposed to explode which means to burst outward. By using implode, they’re saying the system would collapse.

Answer

Because it collapsed inwards, that's what "implode" means. If the movement were outwards, it would be called "to explode".