A failure to quantify the discount for a plea of guilty cannot give rise to an arguable ground of appeal. The 'one transaction' rule does not require concurrent sentences for multiple offences constituting one transaction; the determinative question is whether the total sentence is proportionate to the total criminality. Mental disabilities not causally connected to offending do not reduce moral culpability, and protection of the community may require that an otherwise proportionate sentence not be reduced on account of such disability.
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