If each of your time steps is one week long, you are not modeling the stock price terribly well over a one-week time period, because you are saying that there are only two possible outcomes. ↗
One important measurement issue concerns the fat tails problem that I mentioned earlier. VAR is concerned with extreme outcomes. If the tails of the probability distributions we are using are too thin, our VAR measures are likely to be too low. ↗
Wherever the citizen becomes indifferent to his fellows, so will the husband be to his wife, and the father of a family toward the members of his household. ↗
If it comes to be believed that we are simply a propaganda organ of some kind, as a lot of people believe about some of our competitors, that would be a problem. ↗