don't call something easy (#611)

episodes/02-func-R.Rmd

@@ -84,7 +84,7 @@ We've successfully called the function that we defined, and we have access to th
 
 ### Composing Functions
 
-Now that we've seen how to turn Fahrenheit into Celsius, it's easy to turn Celsius into Kelvin:
+Now that we've seen how to turn Fahrenheit into Celsius, we can also turn Celsius into Kelvin:
 
 ```{r}
 celsius_to_kelvin <- function(temp_C) {