While design software has come a long way over the years, different companies use different systems that don't always work well together. Instead of smoothly sharing 3D models, many still rely on old-school 2D PDFs because they're the only files everyone can open—even though they lack critical information. Jason and Ken break down how we got here, from the early days of 2D drawings to today's advanced 3D models, and why new solutions like STEP files and Model Based Definition (MBD) haven’t fully solved the problem.