“The purpose of a system is what it does” (POSIWID) is an important concept in systems theory that has many applications in society and politics. Coined by British cybernetician Stafford Beer, the POSIWID principle points out that the true function of a system is ultimately revealed by its observable actions and outcomes, not by its intended or stated purpose. In other words, evaluate governance and policies based on their actual, tangible effects rather than their alleged goals.
How it's made
Made with ethically grown and harvested ring-spun US cotton, this is a lightweight fabric (4.5 oz/yd² (153 g/m²)) in a modern unisex cut. The classic fit with the crew neckline deliver a clean, versatile style that can match any occasion, whether formal or semi-formal.
Shoulders are reinforced with twill tape, there are no side seams for a smoother fit, and the ribbed-knit collar helps prevent curling. All shirts feature a pearlized, tear-away label for total wearing comfort.
Solid colors are 100% cotton, while heathers and sport grey use polyester blends for added durability. Note that due to the fabric properties, the White color variant may appear slightly off-white rather than bright white.
Size guide
| XS | S | M | L | XL | 2XL | 3XL | 4XL | 5XL | |
|---|---|---|---|---|---|---|---|---|---|
| Width, in | 16.00 | 18.00 | 20.00 | 22.00 | 24.00 | 26.00 | 28.00 | 30.00 | 32.00 |
| Length, in | 27.00 | 28.00 | 29.00 | 30.00 | 31.00 | 32.00 | 33.00 | 34.00 | 35.00 |
| Sleeve length, in | 7.99 | 8.23 | 8.50 | 8.74 | 9.02 | 9.25 | 9.49 | 9.72 | 9.96 |
| Size tolerance, in | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 |







