นอกจากเรื่อง margin of safety แล้วก็มีเรื่องอื่นอีกเยอะทีเดียว
อ่านแล้วเอาไปคิดใคร่ครวญได้ประโยชน์มากๆ
น่าจะเหมาะกับราคาหุ้นช่วงนี้ :lol:
If you understood a business perfectly and the future of the business, you would need very little in the way of a margin of safety. So, the more vulnerable the business is, assuming you still want to invest in it, the larger margin of safety you'd need. If you're driving a truck across a bridge that says it holds 10,000 pounds and you've got a 9,800 pound vehicle, if the bridge is 6 inches above the crevice it covers, you may feel okay, but if it's over the Grand Canyon, you may feel you want a little larger margin of safety...
1997 Berkshire Hathaway Annual Meeting
You leave yourself an enormous margin of safety. You build a bridge that 30,000-pound trucks can go across and then you drive 10,000-pound trucks across it. That is the way I like to go across bridges.
Financial World, June 13, 1984.
เห็นภาพชัดเจน

source: http://en.wikiquote.org/wiki/Warren_Buffett