Is MI's Move for Will Jacks a Smart Play or Just Panic?

So, Murali Kartik, this cricket fella, says if the Mumbai Indians wanna bring in Will Jacks, it better be for a smart reason, not just panic! They're in a pickle with Rohit and Mitchell out, and they need a win against the Sunrisers. But hey, they could totally win seven in a row! How you doin'?