Question: Is a boxer able to differentiate between the force required to knock a person out and the force required to kill them?
About the article "Boxing", section "Medical concerns".

Candidate passages:
Consider that, if an external attacker did not know the port knock sequence, even the simplest of sequences would require a massive brute force effort in order to be discovered.
A three-knock simple TCP sequence (e.g.
port 1000, 2000, 3000) would require an attacker without prior knowledge of the sequence to test every combination of three ports in the range 1-65535, and then to scan each port in between to see if anything had opened.
As a stateful system, the port would not open until after the correct three-digit sequence had been received in order, without other packets in between.
That equates to a maximum of 655363 packets in order to obtain and detect a single successful opening, in the worst case scenario.
That's 281,474,976,710,656 or over 281 trillion packets.
On average, an attempt would take approximately 9.2 quintillion packets to successfully open a single, simple three-port TCP-only knock by brute force.
This is made even more impractical when knock attempt-limiting is used to stop brute force attacks, longer and more complex sequences are used, and cryptographic hashes are used as part of the knock.
When a port knock is successfully used to open a port, the firewall rules are generally only opened to the IP address that supplied the correct knock.
This is similar to only allowing a certain IP whitelist to access a service but is also more dynamic.
An authorised user situated anywhere in the world would be able to open the port they were interested in to only the IP that they are using without needing help from the server administrator.
They would also be able to "close" the port once they had finished, or the system could be set up to use a timeout mechanism, to ensure that once they change IP's, only the IP's necessary are left able to contact the server.
Because of port knocking's stateful behavior, several users from different source IP addresses can simultaneously be at varying levels of the port knock.
Thus it is possible to have a genuine user with the correct knock let through the firewall even in the middle of a port attack from multiple IP's (assuming the bandwidth of the firewall is not completely swamped).
To all other IP addresses, the ports still appear closed and there is no indication that there are other users who have successfully opened ports and are using them.
Using cryptographic hashes inside the port knock sequence can mean that even sniffing the network traffic in and out of the source and target machines is ineffective against discovering the port knock sequence or using traffic replay attacks to repeat prior port knock sequences.
Even if somebody did manage to guess, steal or sniff the port knock and successfully use it to gain access to a port, the usual port security mechanisms are still in place, along with whatever service authentication was running on the opened ports.
The software required, either at the server or client end, is minimal and can in fact be implemented as simply as a shell script for the server or a Windows batch file and a standard Windows command line utility for the client.
Overhead in terms of traffic, CPU and memory consumption is at an absolute minimum.
Port knock daemons also tend to be simple enough that any sort of vulnerability is obvious and the code is very easily auditable.
With a port knock system in place on ports such as the SSH port, it can prevent brute force password attacks on logins.
The SSH daemon need not even wake up as any attempt that is made without the correct port knock will bounce harmlessly off the TCP/IP stack rather than the SSH authentication.
As far as any attacker is concerned, there is no daemon running on that port at all until they manage to correctly knock on the port. 
"Knock U Out" is the second single from Joel Turner and the Modern Day Poets' self-titled album "Joel Turner and the Modern Day Poets".
It features a guest appearance by boxer Anthony Mundine.
The song incorporates elements from the 1982 Survivor hit "Eye of the Tiger" in keeping with a boxing theme.
The chorus and first verse are performed by DubLT, the second verse by Mundine, and the third by C4.
Beatboxer Turner provides the beat and also replicates the "Eye of the Tiger" riff using both his voice and guitar.
Survivor co-founder and “Eye of the Tiger” co-writer Jim Peterik described the adaptation as “"one of the very few versions that i approve.
It has the spirit intact.
"”The lyrical basis of the song is the Modern Day Poets' portrayal as a musical force to be reckoned with, while Mundine’s verse is a shot at his critics and a vow to regain the WBA Super Middleweight title he had previously lost.
The music video, filmed at a boxing gym in Melbourne, features the group performing the track in a boxing ring with several female dancers in the background.
Other scenes show Turner training with Mundine, with some exterior shots also included.
Mundine’s involvement in the song transpired after he competed with Turner’s manager Mark Holden at a celebrity Grand Prix race in early 2004.
Holden played the boxer a demo of the young artists and asked if he would be interested in recording with them.
After Mundine agreed, the group was immediately required to write a song that would be suitable for him to rap on.
"Knock U Out" was released on January 24, 2005, reaching #14 on the ARIA singles charts and #1 on the independent charts. 
The worm-like chain model (WLC) takes the energy required to bend a molecule into account.
The variables are the same except that formula_14, the persistence length, replaces formula_1.
Then, the force follows this equation: formula_16 Therefore, when there is no distance between chain ends (r=0), the force required to do so is zero, and to fully extend the polymer chain (formula_17), an infinite force is required, which is intuitive.
Graphically, the force begins at the origin and initially increases linearly with formula_4.
The force then plateaus but eventually increases again and approaches infinity as the chain length approaches formula_5 
In Australia, a field force comprises the units required to meet operational commitments. 
The force required to separate two colloid particles can be measured using optical tweezers.
This method uses a focused laser beam to apply an attractive or repulsive force on dielectric micro and nanoparticles.
This technique is used with dispersion particles by applying a force which resists depletion forces.
The displacement of the particles is then measured and used to find the attractive force between the particles.