There was a very good episode recently which had views from the passive investment side (Vanguard) and also the active management space (Scottish Mortgage Investment Trust). Really worth a listen, important points on the effect of compounding annual costs detracting from performance, but also the small number of companies that have actually driven growth and capital creation in the past (nicely balances the low cost that passive trackers can provide, with the potential outperformance active can generate if they select correctly).