Musical stairs sensor code for Arduino

sensor.pde

#include <HashMap.h>

int mini = 0;
int maxi = 16;
const byte HASH_SIZE = 16;
HashType<int,int> hashRawArray[HASH_SIZE];
HashMap<int,int> hashMap = HashMap<int,int>( hashRawArray , HASH_SIZE );

void setup(){
  Serial.print("reset");
  Serial.begin(9600);
}

void loop(){
  for (int thisPin = mini; thisPin < maxi; thisPin++)  {
    int val = analogRead(thisPin);

    if (val > 200){
      int curHit = hashMap.getValueOf(thisPin);
      if ((curHit+1) > 3) {
        hashMap[thisPin](thisPin,0);
        Serial.print("#");
        Serial.print(thisPin);
        Serial.print("#");
      }
      else {
        hashMap[thisPin](thisPin,curHit+1);
      }
    } 
    else {
      hashMap[thisPin](thisPin,0);
    }
    delay(5);
  }
  Serial.println();
}

Any chance that this might get comments added down the road? I'm wondering why you wait until the curHit value gets above 3. Is it to rule out noise/interference?