Thanks, everyone!  You are a really heartening crowd, and I'm lucky to know you.  Thank you very much - it really helps.  
   
Walk report:  I said I'd report on the good things I saw or experienced on my walk.  Well, there was overall, as noticed before, the clarity of the air/light in South Australia - everything so sharp and bright and real!  But as well:
A blue, blue sky - I could almost have gone for a swim today, but I think it will be warmer tomorrow.
Old people sitting on benches enjoying the air and the sun.  "It doesn't get any better than this, does it?" I said to one couple.  "Nope," they agreed, with such 
blissful smiles!   (We were two metres apart - I'm a 
stickler for sticking to the limits.) 
A tree - I need to learn to identify trees - which dangled ribbons and streamers of foliage over the path, higher than head-high, but close enough to feel like a luxurious canopy. 
A house with a run of seven pomegranate trees just inside the fence - that seemed wonderfully 
lavish to me - not just one or two, but 
seven - and with pomegranates, though not ripe.  There was another tree, too, with big round yellow fruit, like peaches - but surely no peach would survive un-netted?  Pomegranates are tough and possums probably wouldn't be interested, but.. I'll have to go back there, and try to peer and see just what kind of tree it is.
And a postie going his rounds on a motorbike - reminding me that I should send some letters to people interstate.  Or maybe a parcel.  
