Berkeley's argument for the existence of God

[polymath257]

There are things for which obviously "esse est percipii", that is, they exist only because they are being perceived by somebody.

The word 'obviously' is always a warning bell for me.  Like 'obviously' what I am telling you is the truth so don't bother questioning it.

Putting aside ill-defined terms and equivocation for one moment, it would be easier to argue that there is nothing that exists only because it is being perceived by someone.

By far the most common place to find a mistake in any argument is after one of the following: 'obviously', 'clearly', 'hence', 'therefore'.

Often, there is a hidden assumption, which then invalidates the whole argument.