Reading Time: 4 minutes I came across an interesting probability problem yesterday. It was in Chinese, but I will translate it into English below. The defensive missile can shoot down the offensive missile successfully 70% of the time. If the defense shoot 3 missiles toward the offensive missile, what’s the probability that they are successful? Think about it for

Reading Time: 2 minutes iPhone Health 深度好文：台湾为何与我们渐行渐远？原文作者：廖信忠 (baidu) || I just noticed the article from Twitter. Also noticed A City of Sadness (悲情城市) from the comments. Personally my earlier view on re-union between mainland and Taiwan was shattered after seeing the Russia / Ukraine war since Feb 24, 2022. And it also reminded me of the recent Zero Covid

Reading Time: < 1 minute Below are some pictures and videos from this week’s flash flood in the area. Quote the last article (the last tweet) written by Mr. Tony Messenger. “These sure the hell aren’t 100-year floods,” Criss says. “They’re like two-year floods. It’s staggering.” || We were not flood, but I know some people were impacted or lost

Reading Time: 6 minutes Some disclaimer: not district official doc. I believe each kid is unique, special and gifted in her / his own way. And for many parents / guardians they do sincerely believe their kids are the smartest. Years ago I think when my older daughter was probably 3 or 4 years old, at the preschool a

Reading Time: 2 minutes This is the worst stock market I experienced for last few years. As shown below. I am not disheartened though. Because I think long term is always good to get rid of the extreme speculations, just like the subprime mortgage last time around (2007 to 2009), this time it seems the speculation in cryptos is

Reading Time: 2 minutes I have been in the US since 1997, and I have seen plenty of disfunction or ugliness of the US politics, mainly on the executive branch and legislative branch. Things from the Bill Clinton Lewinsky scandal, mainly his lying and the subsequent impeachment, to George W Bush’s mishandling of Iraq war and probably a lot

Reading Time: < 1 minute First let me get the Cryptos out of the way. Oil:

Reading Time: < 1 minute also Btw, I sense the current market probably wiped out a lot of new retail investors (home gamers in Jim Cramer’s words), or many new Robinhood app users. Last but not least, is this transitory?

Reading Time: 3 minutes (01-03-2023) The Q3 results is here. It looks like they burned about $49 m cash, and they have $30 m cash on hand. Keep in mind they came to market via SPAC and in last year or 2 SPAC bubble pretty much busted. Another example is Nextdoor ($KIND). Note the marketable security position is the

Reading Time: < 1 minute Link to all videos; course overview page. I saw the first video (Introduction, Financial Terms and Concepts) a while ago. Some background on instructor Dr. Jake Xia. Portfolio Management (also by Jake Xia)