Diligence: steady, earnest, and energetic effort : devoted and painstaking work and application to accomplish an undertaking

Instead of studying for the test, a student of Professor Yolanda De Lucchi at the Universidad de Málaga painstakingly carved their notes in miniscule writing into the side of their clear, blue-capped bic pens.

Would studying really have been more diligent? More lasting? She kept the pens. I kept the images of the pens.

Instead of procedural law, I imagine a test on four-leaf clovers. Facts about four leaf clovers found on WIkipedia carefully etched onto the length of the pen:

A 2017 survey of approximately 7 million clovers in central Europe found the frequency to be about 5000 to 1 (one four-leaf clover for every ~5000 normal three-leaf clovers), twice the commonly stated probability of 10,000 to 1. According to this survey, the frequency of a five-leaf clover is ~24,400 to 1, and of a six-leaf clover is ~312,500 to 1.

The most leaves ever found on a single clover stem (Trifolium repens L.) is 56 and was discovered by Shigeo Obara of Hanamaki, Iwate, Japan, on 10 May 2009
Collectors have reached records as high as 160,000 four-leaf clovers in a lifetime.

The world record for number of four-leaf clovers collected in one hour is 166, set by American Katie Borka on June 23, 2018.

What skills have to be developed to be able to find 166 four leaf clovers in one hour? What skills are required in order to find 166 four-leaf clovers in one hour? At that point, is it luck anymore or diligence?

Redrawing a Baroque (1600–1750) dance notation. The dance itself is kept alive by reconstruction rather than practice, but the notation is a shred of the practice that has been left behind. Even with such focused study, the reconstructions must be inaccurate.