If it is that easy, how come Penrose kept insisting on consciousness being involved in the collapse?
That's not what Penrose thinks. He suggests spontaneous collapses happening according to some law of quantum gravity.
The basic error about the history of the interpretation debate, that people get from the sequences, is that it's a choice between "the wavefunction is real and consciousness collapses it" and "the wavefunction is real and nothing collapses it". The actual practice of QM involves using wavefunctions to predict the behavior of "observables" like position and momentum, and the standard view is that the observables...
Today's post, Where Philosophy Meets Science was originally published on 12 April 2008. A summary (taken from the LW wiki):
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