想當年，比現在的女大還風光。
finance.yahoo.com/news/cisco-stock-still-isnt-back-to-its-2000-high-chart-of-the-week-123018268.html
Twenty-four years ago, in March 2000, Cisco Systems was the most valuable company in the world.
At a valuation of $500 billion, the internet-plumbing company had powered the adoption of the new technology with routers, networks, servers, and switches — and thus, powered the dot-com boom.
Many readers will know what happened next. The boom was a bubble and, as our Chart of the Week shows, Cisco stock fell over 70% by April and almost 90% by October of that year.
