Good advice

Ruth had spent several minutes building with the magna tiles on the light table.  She was working on building three different sized houses, telling the story of the houses.  “This is my house when I’m grown up, and this is my house now, and this is my house when I was so, so little”. 
Suddenly, from across the room, Tait ran over to Ruth and her buildings.
“Next time I made a tower so high (he gestured with his hands) and it fell down – so don’t make it anymore!” he told her urgently before he turned and went back to his play.
Ruth followed Tait’s advice and stopped building, and so avoiding a collapse.
Tait had a clear recollection of his tower falling down, how far in the past that happened is not known, but seeing Ruth’s tall tower triggered his memory and he seemed determined to save Ruth from the same fate.