diff --git a/ch08-conditional-logic/8c-challenge-simulate-a-coin-toss-experiment.py b/ch08-conditional-logic/8c-challenge-simulate-a-coin-toss-experiment.py
index 5d1e075..e42167c 100644
--- a/ch08-conditional-logic/8c-challenge-simulate-a-coin-toss-experiment.py
+++ b/ch08-conditional-logic/8c-challenge-simulate-a-coin-toss-experiment.py
@@ -12,38 +12,29 @@
# 4. After the first toss, you'll need another loop to keep flipping while you
# get the same result as the first flip.
-import random
-
-
-def single_trial():
- """Simulate repeatedly a coing until both heads and tails are seen."""
- # This function uses random.randint() to simulate a single coin toss.
- # randing(0, 1) randomly returns 0 or 1 with equal probability. We can
- # use 0 to represent heads and 1 to represent tails.
-
- # Flip the coin the first time
- flip_result = random.randint(0, 1)
- # Keep a tally of how many times the coin has been flipped. We've only
- # flipped once so the initial count is 1.
- flip_count = 1
-
- # Continue to flip the coin until randint(0, 1) returns something
- # different than the original flip_result
- while flip_result == random.randint(0, 1):
- flip_count = flip_count + 1
-
- # The last step in the loop flipped the coin but didn't update the tally,
- # so we need to increase the flip_count by 1
- flip_count = flip_count + 1
- return flip_count
+# Here is a simpler-to-read thus more pythonistic version, I think :P
+import random
-def flip_trial_avg(num_trials):
- """Calculate the average number of flips per trial over num_trials total trials."""
- total = 0
- for trial in range(num_trials):
- total = total + single_trial()
- return total / num_trials
+def coin_flip_trial():
+ heads = 0
+ tails = 0
+ tries = 0
+# As long as heads OR tails are zero, we have not had one of each.
+ while heads == 0 or tails == 0:
+ result = random.randint(0,1)
+ tries = tries + 1
+ if result == 1:
+ heads = heads + 1
+ else:
+ tails = tails + 1
+ return tries
+
+# So let's now do that 10,000 times and then report the average number of trials it took.
+tries_needed = 0
+for x in range(10_000):
+ tries_needed = tries_needed + coin_flip_trial()
+
+print(f"It takes on average {tries_needed / 10_000:.2f} tries to get both a heads and a tails.")
-print(f"The average number of coin flips was {flip_trial_avg(10_000)}")
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