jwieringa

The Test of a Hypotheses: The Logic and Force of Auxiliary Hypotheses

Crucial tests on hypotheses (in the form of [modus tollens][wiki1]), where a hypothesis is decisively refuted, are impossible in science because it's possible to save a hypothesis from a false test by proactively revising auxiliary hypotheses or a change in test conditions. The following demonstrates the reliance upon auxiliary hypotheses:

If (H and A), then I
not I
not (H and A)

jwieringa

Using and Understanding Models

1. Understand Patterns
2. Predict Points
3. Produce Bounds

• Range of possibilities

4. Retrodiction

• What was the past like?

5. Predict Other Stuff

• Model showed another planet present even though it couldn't be seen

jwieringa

Scrappy Academy*

** Disclaimer: All subject to review, change, and overall better scrappiness **

Goals

1. Self study group that follows hungry academy course
2. Pick one open source project to contribute to
3. Invite Ruby community members to weekly meetings as mentors

Values

jwieringa

# Below is an example of a User Story turned into a Cucumber feature

User Story
----------

As a <Insert Role>
I want <The Tool>
So that  <Insert Business Value>

If a customer enters a credit card number that isn’t exactly 16 digits long, when they try to submit the form, it should be redisplayed with an error message advising them of the correct number of digits.

jwieringa

1. While running bundle install on a project, I ran into the following error:

ArgumentError: /Users/jason/.rbenv/versions/1.8.7-p358/lib/ruby/site_ruby/1.8/rubygems/requirement.rb:72:in `parse': Illformed requirement ["#<YAML::Syck::DefaultKey:0x11418fa78> 0.2.1"]
An error occurred while installing power_enum (0.6.2), and Bundler cannot continue.
Make sure that `gem install power_enum -v '0.6.2'` succeeds before bundling.

2. According to Bundle, it was getting hung up on an illformed Gemspec:

jwieringa

Step 1

Identify what the business goal is for building software.

Business goal

Increase repeat sales to existing customers by 50% over the next 12 months

Step 2

From the business goal, derive the scope of the feature(s)

jwieringa

➜  terraform git:(master) ✗ terraform apply
vsphere_virtual_machine.web: Creating...
  disk.#:                          "" => "1"
  disk.0.size:                     "" => "40"
  domain:                          "" => "vsphere.local"
  memory:                          "" => "4096"
  name:                            "" => "terraform_web"
  network_interface.#:             "" => "1"
  network_interface.0.ip_address:  "" => "<computed>"
  network_interface.0.label:       "" => "10.112.70.0"

jwieringa

nginx/
!nginx/.gitkeep
!nginx/logs/.gitkeep

src/

tmp/

jwieringa

###########
# Variables
###########
variable "aws_key_name" {
  default = "mykeypair"
}

variable "region" {
  default = "eu-west-1"
}

jwieringa

#Nodevember Nodes

Yahuda Keynote

• basically a ember 101 walk-thru
• fastboot early 2016 inc client-side re-hydration

Elijah Manor - Code Smells

• switch statement --> strategy pattern
• eslint allows custom plugins
• enable/disabled rules @ file level, or block