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The stop sign map at my kid's school finally made me get why red/green isn't the only trap
Last Tuesday I was waiting in the pickup line at Lincoln Elementary and noticed the new playground map by the gate had colored dots for each zone. A dad next to me said his son is red-green colorblind and couldn't tell the soccer field dot from the basketball dot at all, so they just guessed every time. That got me reading about it after dinner and I learned red/green is only one type, some people can't separate blue from yellow either. The fix was so easy it bugged me: the school added little shapes inside the dots, a circle, square, and triangle, and now the map works for everyone. I went home and checked my own invoices since I color code jobs by crew and realized half my green and orange tags look the same to some folks. Has anyone here swapped color coding for patterns or labels at work, and did it stick or did people just ignore it?
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