Reminds me of road safety advice as a disproportionate number of incidents occur within the first and last miles. A similar effect is witnessed with crime and

Reminds me of road safety advice as a disproportionate number of incidents occur within the first and last miles. A similar effect is witnessed with crime and when I worked in retail we had training to help us focus on the first and last 30 minutes of the day as these were when staff (for whatever reason) paid least attention and it was believed that this was known and taken advantage of. It's just a human pattern, that appears in many tasks we undertake. It doesn't surprise me that it appears in coding.