text: console.log(Number.MAX_SAFE_INTEGER);
  console.log(Number.MIN_SAFE_INTEGER);
  var i = 1;
  console.log(i);
  i = i + "";  //oops
  console.log(i + 1);  //treats as a string
  console.log(i - 1);  //treats as a number
  var k = "1";
  k++;                 //treats as a number
  console.log(k);  
  k = "1";
  k += 1;              //treats as a string
  console.log(k);
  