During a recent appearance on "The Master Investor Podcast" with veteran business reporter Wilfred Frost, Ark Invest Cathie Wood stated that she favors Bitcoin over Ethereum.  According to Wood, Bitcoin is "the global monetary system," which is alone "a very big idea."  The famed stock picker is also bullish on Bitcoin because of its superior technology, noting that the layer-1 blockchain has never been hacked. "The other blockchains cannot say that," she added.