Can you spot the cat? A friend posted this on her facebook inviting us to try. I am putting it up here not to tease others to find the cat but to drive home one important point for my kids - It is important to revisit your work because as humans, we see what we want to see. That is, there are features that are important which we will inevitably miss.
I shall be waiting for them to tell me if they have found the cat. It is not that difficult if you have found it, and infuriatingly hard if you haven't. Again this is familiar isn't it? Nothing is truly hard or easy. What matters is if you are determined to understand it and keep at it until you have got it.