Using any() and any()

# any compared with any

my @first_set = qw(1 1 1 1 1 1 1 1 1 1 1 1 1 1);
my @new_set = qw(1 2 1 1 1 1 1 1 1);

if (any(@first_set) != any(@new_set)) {
  "a fluctuation in the readings has been detected".say;
}

# any compared with any - example 2

my @first_set = qw(1 1);
my @new_set = qw(1 1.4 1 1 1 1 1 1 8);

if ( (abs(any(@first_set) - any(@new_set))) > 0.5) {
  "a variation in the readings is too large".say;
}