The Simple Path to Wealth

It's rare for me to read a financial book and nod in agreement so much. Even still J.L. Collins presented a few ideas that challenged my own view on investing - which was happily unexpected. In addition to index fund investing and taking advantage of tax-free growth, two areas he mentioned stood out as things I've advised that he recommends against: dollar cost averaging and international funds. If the market grows more often than not over time, then why DCA? If international markets overwhelmingly track the US market, why invest in intl? Both good questions that i don't have great answers to. Either way, they got me thinking.