*By Jacqueline Corba* Bitcoin dropped back below $8,000 this week, prompting the cryptocurrency's defenders to explain the seemingly rapid fluctuations (prices fell about $500 on Tuesday). "Probably the biggest thing driving Bitcoin's price where it is today is in fact the 'Bitcoin fork,'" a technical change in the currency's transaction protocol, said Brock Pierce, the Bitcoin Foundation's chairman. "There's uncertainty on what is Bitcoin?" The most recent sell-off comes after Bitcoin hit an eight-week high on July 24. "There was a nice moment there where it felt like we were going from this kind of bear, stagnant market back into a bull state," Pierce said in an interview Thursday on Cheddar's Crypto Craze. "But obviously that was a little premature." Pierce, who started investing in Bitcoin in 2011, said he remains "incredibly bullish" on the digital currency, calling it "Gold 2.0." For more on this story, [click here](https://cheddar.com/videos/crypto-pioneer-brock-pierce-shares-outlook-on-bitcoin).

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Tech leader who navigated the internet’s 90s crash weighs in on AI
Former Cisco Systems CEO John Chambers learned all about technology’s volatile highs and lows as a veteran of the internet’s early boom days during the late 1990s and the ensuing meltdown that followed the mania. And now he is seeing potential signs of the cycle repeating with another transformative technology in artificial intelligence. Chambers is trying take some of the lessons he learned while riding a wave that turned Cisco into the world's most valuable company in 2000 before a crash hammered its stock price and apply them as an investor in AI startups. He recently discussed AI's promise and perils during an interview with The Associated Press.
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