I limit myself to investing in companies that I understand and avoid companies I know nothing about.
Obviously she did not know enough about Bayer. Did she even bother to find out? If you are going to invest $$$ in a company you do due diligence to find out more about that company BEFORE investing in it.
Ho Ching has a dismal investment history. She is either too lazy or incompetent to upgrade her investment skills.
If you want to avoid problems in investing you have to do your your home work. I read that Buffet is an avid reader of financial news. How much time does Ho Ching spend each day to keep up with what is going on? How about the other so call "experts" that surround her in Temasek?
We have seen how useless some scholars are. Some cannot even run an MRT system.