Is it hard to make ice?

Is ice creation really such a challenging task? One might assume that with the mere presence of water and cold temperatures, ice would naturally form. But what if the conditions are not quite right? Could there be hidden complexities in the process? Does the purity of the water matter? Or is the specific temperature crucial? Perhaps the rate of cooling plays a significant role too. Are there specific tools or techniques required? Could the humidity in the air affect the outcome? As I ponder these questions, I realize that the simplicity of the concept may be deceptive. There's more to it than meets the eye. So, tell me, is it really as straightforward as it seems, or is there more to the story of making ice than we initially thought?