mwc

  Of course, once your investment had grown past a certain 
  point, it would be impossible to put into any stock
  without drastically affecting the stock’s price. In many
  cases, investing this volume of cash would be
  impossible [...] we also did not take into account
  trading fees nor changes in the composition of the S&P
  index. We also assumed that all companies allowed for 
  investment in fractional shares.

  Moreover, even if one made the impossibly optimistic 
  assumption that picking the best stock of the day is a 
  50-50 guess, there would be only a one-in-3.53 
  trevigintillion (3.53 x 1072) chance of matching these 
  results.

  The [basis minimum income] scheme proposed by the Welfare
  Working Group is a significant policy change with large
  economic consequences. The scheme is fiscally very costly
  and would not necessarily achieve its main goal of 
  reducing poverty. The high personal tax rates required to
  fund the scheme are highly distortionary to the labour
  market and to savings and investment decisions, and would 
  be likely to induce a significant behavioural response. 
  This has damaging effects on the tax system and economic 
  growth.

  Although the Gini coefficient improves under all models,
  many beneficiaries (including the disabled, carers and 
  sole parents) currently receive more than $300 per week 
  and would be made financially worse off under a GMI 
  scheme.