[sgbuffett]

So basically it is letting all the profits gain so far be wiped off by not looking during a market crash and let them restart rolling from scratch again.

Another expert will say why not take the profit gain so far by offloading (instead of wasting it by not looking) then buy back again after the crash and let them roll from scratch again......

If one can predict  crash accurately to take profit..then cN also short to make a fortune.

If you are not top expert you probably cannot do it well.

So ordinary  investors should not try to time.

While the market crash many times only one time, it undo 10yr of investing during financial crisis if you time perfectly....most of the time it only correct tk 6 months to 15mknths low so all your knvestment before that makes money.

The simple advice given takes into consideration many scenarios....one just need to follow and don't act smart.