On several occasions, I have commented on the success of specific mutual funds, by stating some results, such as in the past year, PRHSX (T Rowe Price Health Science) has appreciated 41.9%.
Among comments are that just buying a single stock could gain lot more, and that the Florida Lottery might have a payout in the millions.
These statements are all true, but do not take into account that investing in Apple is many times as risky, and investing in the lottery ticket, millions of times as risky.
There is clear balance between risk and gains that some people do not seem capable of understanding. The stock market, which is the basis of mutual funds is not at all like the lottery. In the lottery, the winner is usually just one person, and never more than a few. Everyone else loses everything. In the stock market, there are days when nearly all stocks rise in price. There are no days in which everyone wins the lottery. Investing in a solid company like Apple is very unlikely to result in you losing everything (unless you invest on the margin). It is even less probable that a mutual fund will result in anyone losing it all.
To successfully invest, you have to be aware of the odds.