Complex sentence: However, increased saving does not always correspond to increased investment, if savings are stashed in a mattress or otherwise not deposited into a financial intermediary like a bank there is no chance for those savings to be recycled as investment by business.
Split into simpler sentences: However, increased saving does not always correspond to increased investment. If savings are stashed in a mattress or otherwise not deposited into a financial intermediary like a bank there is no chance for those savings to be recycled as investment by business.