Timelines go from left to right

If your audience is from the western culture then they expect timelines to go from left to right. This is drilled into them at school and violations of this rule cause confusion. The following diagram is from ISO4216 and is meant to represent the process for evaluating product quality.

The timeline is shown on the right hand side going from top to bottom. It starts with 'Requirements Definition' and ends with 'Evaluation'. Very confusing. The arrows have different thickness (for no apparent reason); the boxes also have different thickness for their borders. Also the boxes represent activities so there names should start with verbs. Here is the diagram redrawn:

In the redrawn diagram I have also clarified exactly what are the inputs and outputs for each activity. I find it ironic that international quality standards often have poorly drawn diagrams.