Showing posts from April, 2019

LuldCalc Live at the App Store

LuldCalc is live at Apple's App Store.  Designed for traders and stock exchange operators, it calculates the upper and lower price bands given a stock's price.  Search "Luld" on your iPhone's App Store.
The tables here summarize the rules involved in the calculations.  More details can be found the luldplan website.

Apple requires a privacy policy for all its apps. Simply put, LuldCalc is a stand-alone calculator, does not collect personal information, and does not connect to the internet.

Privacy PolicyThis privacy notice discloses the privacy practices This privacy notice applies solely to information collected by this website. It will notify you of the following:

1. What personally identifiable information is collected from you through the website, how it is used and with whom it may be shared.
2. What choices are available to you regarding the use of your data.
3. The security procedures in place to protect the misuse of your information.

Estimates Are Not Deadlines

A friend posted this image, and naturally, I laughed.  I shared it with other friends, and they laughed too.  That this situation was so widely recognized, however, made it cause for crying rather than for laughing.

Stating the obvious, estimates are not deadlines, and buffers -- proper spacing between milestones -- are needed for good  project management.  In practice, this advice is lost, and the result is bad software.

Failure to implement buffers ignores the unexpected: people leave, requirements change, a show-stopping bug is found. Without buffers, one unexpected problem cascades to all the milestones downstream.

Some project managers play it "close to the vest."  They really do have buffers in the schedule, keep them a secret, and hope the developers continue to work hard to meet the original deadlines.  The hazard here is that the developers will make (unnecessary) compromises to meet them.

"Do we have time to add an extra field in the database record for faster…

Einstein meets Homer Simpson

Einstein: So Mr. Simpson, what makes you say the universe is shaped like a doughnut and is expanding?  Homer: Mmmm, expanding doughnut. Einstein: Do you think the expansion is due to dark matter and dark energy? Homer: Dark matter? Oh, you mean chocolate. There's lots of energy in chocolate. Einstein: Hmmm, chocolate? Homer: Mmmm, chocolate.