Soon after bitcoin (BTC-USD) startled investors with a rare drop below $30,000 last week, the cryptocurrency has rebounded dramatically in recent days, rising well above $40,000. The sudden bounce back has cheered bitcoin bulls but also underscored a concern among critics that the volatility of the most popular cryptocurrency makes it useless for the buying and selling of goods.

Read why Pavan Sahadev, ex-Deutsche Bank managing director feels that Bitcoin is more specualtive than gold and can’t be an alternative currency as suggested by some on Yahoo Finance.

For more see : Bitcoin.