Ouchy prickers everywhere

You cannot go outside in Maun without shoes. Well, I exaggerate. Obviously you can, and my children often do (they are not required to wear shoes to school). But you (I) almost always regret it. Everywhere there are sticky prickers and enormous thorns from Acacia trees. Even if I sweep my patio carefully, it is inevitable that I will get a painful foot jab every time I step out to hang laundry. By the time we leave Botswana, we will have developed either tough African feet, a religious devotion to shoes, or permanent foot splinters (the unhappy middle ground). Glad I got my tetanus shot.