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diff --git a/.gitignore b/.gitignore
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+__pycache__
diff --git a/COPYING.txt b/COPYING.txt
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--- /dev/null
+++ b/COPYING.txt
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+Creative Commons Legal Code
+
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diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
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+# 8hash
+
+A consistent "magic 8-ball" that chooses the result based on a hash of the input string, so that it always returns the same result when given the same input (or fails to return a concrete answer).
+
+Since the standard non-committal answers in a magic 8-ball indicate that you should try again later, we first randomly decide if we should use a non-committal answer or not, and only if not, use the hash of the input to pick an unchanging committal answer.
+
+We use the "djb2" hash function because of its simplicity.
+
+## Rationale
+
+It is somewhat strange that magic 8-balls, both physical and digital, can return opposite responses to the same question. At least in the digital case, we can mitigate this.
+
+Of course, if you get an answer not to your liking, you can reword your query to try for a new one.
+
+## Usage
+
+Run `./eight_hash.py` for interactive use, or `import eight_hash` to use as a library. We have to spell out eight because identifiers can't start with a number :(.
+
+## Copying
+
+The author of this software is Arjun Satarkar.
+
+This software can be used under the CC0 1.0 Universal. See the COPYING.txt file for the full text.
diff --git a/eight_hash.py b/eight_hash.py
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index 0000000..7211d5a
--- /dev/null
+++ b/eight_hash.py
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+#!/usr/bin/env python3
+import sys
+import random
+
+# Source: https://en.wikipedia.org/wiki/Magic_8-ball#Possible_answers
+committal_responses = [
+		# Affirmative
+		"It is certain.",
+		"It is decidedly so.",
+		"Without a doubt.",
+		"Yes definitely.",
+		"You may rely on it.",
+		"As I see it, yes.",
+		"Most likely.",
+		"Outlook good.",
+		"Yes.",
+		"Signs point to yes.",
+		# Negative
+		"Don't count on it.",
+		"My reply is no.",
+		"My sources say no.",
+		"Outlook not so good.",
+		"Very doubtful.",
+]
+
+non_committal_responses = [
+		"Reply hazy, try again.",
+		"Ask again later.",
+		"Better not tell you now.",
+		"Cannot predict now.",
+		"Concentrate and ask again.",
+]
+
+
+def djb2_hash(text):
+	res = 5381
+	for c in text:
+		res = res * 33 + ord(c)
+	return res
+
+def get_committal_response(question):
+	return committal_responses[djb2_hash(question) % len(committal_responses)]
+
+def get_response(question):
+	if random.random() < len(non_committal_responses) / len(committal_responses):
+		return random.choice(non_committal_responses)
+	else:
+		return get_committal_response(question)
+
+if __name__ == "__main__":
+	try:
+		while True:
+			print(get_response(input("> ")))
+	except (KeyboardInterrupt, EOFError):
+		sys.exit(0)