傳說中大天使加百利之號角 Gabriel’s Horn 一旦響起，就是審判日 Judgment Day 的到來。然而卻沒有任何人見過這個號角？這也許正是義大利數學家埃萬傑利斯塔‧托里拆利 Evangelista Torricelli 想像創造托里拆利小號之原因︰它是一個表面積無限大但卻體積有限的三維物體，或許該是用著第五元素乙太才能構成的吧！！
比方說︰『事實就是發生過了的事』？如果曾經有一隻猴子真的敲打出了莎士比亞的哈姆雷特，那麽這是那隻猴子它自己能知道的事實嗎？假使連它自己都不能知道，人們會認為這是件發生過的事實嗎？又假使歷史上根本沒有莎士比亞的哈姆雷特，然而未來將會有□□的○○，到那時有隻猴子曾使這事成真的了，難道真的可以歸結說過去曾經有一隻猴子真的敲打出了□□的○○的嗎？
學習就像是個『羊角螺旋』的軌跡，一再的一次又一次覆裹著中心的主題，每次的回歸 ，總是帶著新的知識與舊的記憶。自古以來人類一直想方設法希望解開大自然的奧秘，也許終將能有一天，這個思想螺旋成了『龍捲風』，大到能含括天地萬物。
這樣的一個學習者將會如何建造自己知識之金字塔的呢？他會不會用『想像的實驗』去釐清『基本概念』之糾葛的呢？還是用『推導歸謬』的邏輯，去探測一個『自明假設』之深遠結論的呢？又或者會將在大自然中發現的方程式求解，然後『畫圖』與『演示』這個解之意義的呢？……
如果從人類的創造發明史來看，那樣的學習者終將使用當時之最好的『學習工具』，打造自己的『學習工具箱』，甚至會創新『既有之工具』。就現今來講，除了使用電腦的一般應用軟體之外 ── 比方說文書處理等等 ──，最重要的就是能掌握 『程式語言』與『數學語言』的工具。或許這正是樹莓派基金會一開始打造樹莓派時所想的重要原因，讓學習者能有學習的工具！！
─── 《加百利之號角！！》
假使我們已經仔細讀過教程，而且認真作過練習，甚至冒險探究過sonic π 秘境，此刻讀著 Dr . Sam Aaron 博士的
14 – Conclusions
This concludes the Sonic Pi introductory tutorial. Hopefully you’ve learned something along the way. Don’t worry if you feel you didn’t understand everything – just play and have fun and you’ll pick things up in your own time. Feel free to dive back in when you have a question that might be covered in one of the sections.
If you have any questions that haven’t been covered in the tutorial, then please jump onto the Sonic Pi community forums and ask your question there. You’ll find someone friendly and willing to lend a hand.
Finally, I also invite you to take a deeper look at the rest of the documentation in this help system. There are a number of features that haven’t been covered in this tutorial that are waiting for your discovery.
So play, have fun, share your code, perform for your friends, show your screens and remember:
There are no mistakes, only opportunities.
結語，彷彿心有戚戚焉？
所以才借『附錄 ABC』勸學也！
A – MagPi Articles
Appendix A collects all the Sonic Pi articles written for the MagPi magazine.
Dive into Topics
These articles aren’t meant to be read in any strict order and contain a lot of cross-over material from the tutorial itself. Rather than try and teach you all of Sonic Pi, they instead each focus on a specific aspect of Sonic Pi and cover it in a fun and accessible way.
Read the MagPi
You can see them in their glorious professionally typeset form in the free PDF downloads of The MagPi here: https://www.raspberrypi.org/magpi/
…
B – Essential Knowledge
This section will cover some very useful – in fact essential – knowledge for getting the most out of your Sonic Pi experience.
We’ll cover how to take advantage of the many keyboard shortcuts available to you, how to share your work and some tips on performing with Sonic Pi.
B.1 – Using Shortcuts
Sonic Pi is as much an instrument as a coding environment. Shortcuts can therefore make playing Sonic Pi much more efficient and natural – especially when you’re playing live in front of an audience.
Much of Sonic Pi can be controlled through the keyboard. As you gain more familiarity working and performing with Sonic Pi, you’ll likely start using the shortcuts more and more. I personally touch-type (I recommend you consider learning too) and find myself frustrated whenever I need to reach for the mouse as it slows me down. I therefore use all of these shortcuts on a very regular basis!
Therefore, if you learn the shortcuts, you’ll learn to use your keyboard effectively and you’ll be live coding like a pro in no time.
However, don’t try and learn them all at once, just try and remember the ones you use most and then keep adding more to your practice.
……
C – Minecraft Pi
Sonic Pi now supports a simple API for interacting with Minecraft Pi – the special edition of Minecraft which is installed by default on the Raspberry Pi’s Raspbian Linux-based operating system.
No need to import libraries
The Minecraft Pi integration has been designed to be insanely easy to use. All you need to do is to launch Minecraft Pi and create a world. You’re then free to use the mc_* fns just like you might use play and synth. There’s no need to import anything or install any libraries – it’s all ready to go and works out of the box.
Automatic Connection
The Minecraft Pi API takes care of managing your connection to the Minecraft Pi application. This means you don’t need to worry about a thing. If you try and use the Minecraft Pi API when Minecraft Pi isn’t open, Sonic Pi will politely tell you. Similarly, if you close Minecraft Pi whilst you’re still running a live_loop that uses the API, the live loop will stop and politely tell you that it can’t connect. To reconnect, just launch Minecraft Pi again and Sonic Pi will automatically detect and re-create the connection for you.
Designed to be Live Coded
The Minecraft Pi API has been designed to work seamlessly within live_loops. This means it’s possible to synchronise modifications in your Minecraft Pi worlds with modifications in your Sonic Pi sounds. Instant Minecraft-based music videos! Note however that Minecraft Pi is alpha software and is known to be slightly buggy. If you encounter any problems simply restart Minecraft Pi and carry on as before. Sonic Pi’s automatic connection functionality will take care of things for you.
………
宛似『羊角螺旋』般之學習者，或將捲起『龍捲風』耶☆
有如『即興表演』者，終須熟記『筆記小抄』的呦◎
/sonic-pi-cheatsheet.md
Cheatsheet for Sonic Pi
Just some notes on Sonic Pi
- To accompany this tutorial: http://tinyurl.com/wwc-sonic-pi
- Link to this page: http://tinyurl.com/sonic-pi-cheatsheet
- Walkthrough for live demo during intro: https://gist.github.com/claritee/753811cc42ee4d304dba3399a4d57fa1