For me, a similar approach is actually the exact opposite. It's always a struggle to fit a good summary of your professional life on a single page and being abl

For me, a similar approach is actually the exact opposite. It's always a struggle to fit a good summary of your professional life on a single page and being able to put some short stuff in multiple columns can help you save space. For example I usually have certifications, trainings, etc in two columns since they're often fairly short entries.